Tuning the Prod bullpup

With the advice of forum dwellers, I finally have my Prod pup cranked to the max.
I originally planned for my gun to give me 16 shots @17fpe, but since I stumbled upon such great consistency, I’m most likely going to keep the very high power and low shot count.
I’m getting 21fpe with Predator Polymags. 2,900psi fill, 4oring Bstaley mod, TP opened to 7/64, the heaviest spring I could fit, hammer spring at full CCW, throw at 1 1/2 turns CW. The 9th shot in my string dropped 12fps and continued to fall.
Unfortunately I’m only getting 8 shots.. But check out these 8 shots-

Damn I love this little pup..