Hill handpump QC issues?

Bought my first PCP in June this summer, with a Hill MK2 spartan to charge it. Worked good until a month ago, when it seized up. Turns out the little O-ring on the pump head was got borked. Ok, fair enough, maybe I shouldn't have charged my 0.8L airsoft HPA tank with it. So, me orders a seal kit for the MK2, which of course doesn't fit because the MK2 spartan is a different pump. So, I have my shop order a bunch of the correct pump head O-rings (06R00574 anno November 2022, for those looking for a part number) and order a Hill MK5 because after the whole debacle I don't want to be caught out without a functional pump in the future.

And what do you know, not 6 days after it comes in it too poops the bed with exactly the same issue! Made sure it never got warmer than "this is still comfortable to hold", so taking 10 minute breaks after 75 pumps, give or take. It was also properly lubricated after about two days (.177 bb-sized dot of their own brand grease on the inner shaft, spread around evenly). €500 worth of over-engineered bicycle pumps, service kits and hours spent dealing with customer service later I'm still down one fill source for my MK3. Borrowing an FX 4-stage turbo from a friend in the meantime, and that's chooching along just fine.

I don't run into a whole lot of moaning about Hill on the internet, they don't sell re-branded chinesium and they seem at least halfway competent people when you give them a call. Has anyone had similar issues with Hill handpumps or am I just a statistical anomaly?
 
Mine has been going for two years with only a wipe down with silicone oil and I use it every day to pump my HW44 or my BRK Atomic. I change the filter material regularly. So I don't understand why yours was so flaky.
well, those are both pistols so I'm guessing it's quite a bit less volume than the 480cc 250 bar cylinder on an Impact ergo less heat generated. But like I said, I take care not to overheat them and it broke anyway. Twice.
 
Biggest thing is go slower than you think you are. You can avoid the heating up issue if you use deliberately slow strokes up and down to the point where the air is compressed, then a quick push down. Put a movie on and let your mind focus on that. If you go super slow on the up and down it will not get warm and no need to take breaks. Sounds like you are going too fast causing the lube to heat up and run off of where it should be.
 
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Could have saved so much money and hassle by just getting a 50 dollar one from eBay or Amazon. Guess I thought this was commonly known. They are great. Only thing that needs regular change is the small oring in the bottom of them. They are an 006 (I believe ) oring and can be had on Amazon as well.
 
Could have saved so much money and hassle by just getting a 50 dollar one from eBay or Amazon. Guess I thought this was commonly known. They are great. Only thing that needs regular change is the small oring in the bottom of them. They are an 006 (I believe ) oring and can be had on Amazon as well.
Worth a shot for the money, I guess. My line of thinking was "if the expensive ones are this chintzy, how much will the cheap ones suck?" plus the fact that I really want some solid build quality between me and the 300 bars itching to launch a grub screw into my sternum.