Dang thanks so much for the summary. I'll work with that approach. I'd definitely gotten the reg out of whack. I did read the CW / CCW rule on the site I got the new block from, at the moment I'm still with the stock reg that requires degassing, taking the tank apart, reg pulled out & adjust. I had no idea about the 1/16 turn increment, I'd watched some mod videos and 1/8 turn increment was the suggestion but I did 1/4 because I hadn't learned the "less is more" concept with airguns at that point lol. Learning that one the hard way now. But knowing me, I'll probably still want to degas & reduce the reg a little more before then like was suggested by SB237, just for learning purposes. If 1/16 turn is all that it takes for any kind of change, very good chance it's too wide open due to my guessing where it was at prior to disassembly.
The hammer spring, how would you measure the PSI it's set at? I could locate a tool that measures spring tension somewhere if need be, unless there's a different method to find where that PSI is at currently?
Last question for now...before I took it all apart, it was zeroed right around the middle of the elv/wnd turret adjustments' extents...good bit of leeway for adjusting in either direction. Now, it takes the windage being cranked all the way to the right-end stop before it's centered L/R with where boresight is. I took the back rail back off & re-seated it with no luck. Something got off somehow & not sure what's causing it. As an aside, does the POI change with the angle down that you're shooting? I'd have the zero set just right when level with the target around 40yds, but then go up to the second floor from the window in the house....and with crosshairs at the bull, hits about an inch below. I can't see a powder bullet having that kind of discrepancy, unless pellets are something else? Same distance, same POA, higher shot angle, lower POI. I can't figure it out.
I'm learning a ton from everyone on here and once I"m through the beginner screw-ups I know I'll have a much easier time with the fine-tuning & mods...I just hope to build a good foundation of know-how on the basics before I move forward, I'd really like to stick with this hobby, despite its sometimes budget-unfriendly nature HA! Thank you again.
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great little affordable slugs if your guns barrel likes them! 
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