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I'm not an Olympic shooter, and for my purposes, the S510 is too heavy. By that same token, I got rid of my Lelya 2.0 because it was too light for the trigger it has (among other reasons).

For me, someone that usually shoots off hand, the weight is a burden. It's the trigger, cocking action, barrel, stock, regulator consistency and craftsmanship that make it accurate.

After the XTi-50 I figured their next model would update the milling on the action a bit. It just looks dated at this point. At the very least, they could've found areas to shave off some weight. My S510 shoots well, but it's heavy.

Yeah, these things often need some percussive maintenance when taking them apart. It's especially frustrating when things unscrew so easily in every video you watch. The amount of leverage I needed to use made the stubby wrenches I bought pretty useless.

I don't recommend doing this a lot, but try turning the Yong Heng off while there's still pressure inside it. These things are so noisy and shake so much that it's hard to find leaks while they're running. And like ImpactX said, spray some soapy water near suspected leaks.

Just got these in from rc4fun. These one have slots for ball detents to slide into.

Well, I busted out the bore cam to take a closer look... That solves the leak question. Figured damage like that would cause more noise, but I was wearing hearing protection. Sounded like an o-ring going, not a piece of metal splitting.

I recently blew a burst disc on my Yong Heng compressor. Despite replacing the disc multiple times, I'm getting a leak around the threads for the burst disc assembly. I've changed the amount of torque applied, but no dice. Apparently, these things can crack, so I have another on order. In the...

On the Dreamline, there's a screw above the transfer port. What type of sealant should I use to prevent air from escaping around it? I tried thread tape, but I can still feel air around it when I fire the gun. Thanks.

Both 28mm and 23mm.

Looks nice. What sizes do you have?

I have a set of Tekton wrenches that gets the job done. The problem is that they're long, which can make unscrewing gauges awkward. I also have set of their stubbies, but they don't make them in large enough sizes. Is there something better? Thanks.

I can't say for sure, but based on the position of the weep hole, I'd look inside the regulator. Don't worry about looking for a particular o-ring. See it? Replace it. When looking for leaks in mine, I inadvertently made more by reusing the seals I came across. As for the metal ring, yours looks...

Been trying to source a replacement for my Dreamline Classics' regulator gauge: 23mm, 200 bar range, black face, chrome finish, FX branding. Utah Airguns only has one in stock, apparently. Anyone know of another store that might have some? Thanks.

On the Dreamline, there's a grub screw on side opposite the power adjuster. It fits into a slot on the power adjuster assembly and prevents unwanted movement. I'm talking about the small screw on the bottom of this picture: Should I be screwing this thing in until it bites into the power...

Just to verify, which direction is the valve seat supposed to be oriented? I assume it's the first, but I'm narrowing down a leak and want to make sure, so I don't have to crack everything open again. Thanks.

Another update. Utah Airguns suggested I look at the o-rings on the valve stem plug. There's a weep hole on it that I never noticed. I replaced o-rings #71 and #72. No more leaking from the weep hole as far as I can tell. Might've damaged the o-rings from all the disassembling I've been...

Small update. Contacted Utah Airguns for help. We'll see where it goes. In the meantime, I found another leaky weep hole. The one on the plenum still leaks. However, I also discovered another leak on the air tube. It's the weep hole nearest to the regulator. Not sure what to make of it, but...

Ah, I should clarify that I have a Dreamline Classic. Unfortunately, I could only find a detailed regulator diagram for the Tactical. That said, the reg internals appear to be the same. Here's a better idea of what I'm working with: Valve assembly aside, there appears to only be a single...

Just to clarify, which o-rings are considered "outer"? Are we talking about the ones one the regulator screw and regulator house? In any case, I ended up opening one of the regs to take a look around. Everything looked fine. No obvious damage, anyway. I have 4 x 1.5mm o-rings on hand, so I...