Using 3 different paints I've been getting breaks in the breach area. Usually causing my eyes to shut off and forcing me to shoot slower. I tried overboring to see if that would fix the issue but it did not. This has happened with both a spire and a rotor so I don't believe it is the hopper. I have 1 Green detent and 1 softer detent. I don't know what the pressure is at as i don't have a tester but have the gun shooting 290 +- 5 with stock dwell.
Change detents so you have a fresh set.
Also you could be seeing a little bit of bolt stick, try lubing it just a tad bit more/ less.
You could also have an eye malfunction thatd causing it to chop paint.
Replace bolt tip oring. And power tube, switch orings.
These are the most comon things that we see when chopping paint.
If you want a small amount of specific o-rings a good place is www.theoringstore.com. 5 dollar shipping in the US and they have plenty of 1x15's in stock right now. Either that or just get a full rebuild from oringmonkey!