well, not pretty , but i kinda knew that going in..the tank will eventually sit at 6 oclock below the stock, but for now this was expedient..An interesting part, I assume because of the massive plenum volume between the tank and valve is that the gun self regulates a bit.. I cannot get a shot off outside a 15fps spread,,pretty interesting .. another odd side effect is the valve doesnt always have the pressure to seat the check , so i need to recock quickly on occassion.. But thats easily fixed by going back to the heavier valve spring.
another odd factoid , the valve sealed the tube with a 112 oring , yet my machined adapter only sealed the tube with a 113.Im down a few fps from just slapping in a 12 gram , and again , it needs to be tuned differently now that its almost all gaseous co2 reaching the valve, and not liquid..
fun and easy project overall, the only challenge at all is sealing the tube..( you can externally test the bulk assembly , foster etc)matter of fact now that the pressure leveled off after initially piercing the 90 gram , the valve now seats no problem at 1000psi
TUNING ADVICE WELCOME, NEVER HAD A BULK GUN