Tuning Taipan Veteran standard. 177 max fpe?

I have mine shooting 13.43's at 850 and 10.34's at 940. I don't remember how many turns back from max. I think it is one and a half. I started at two and shot over the chrony until the E.S. started to widen then backed off a bit. It comes off the reg. about 110 to 115 with a slow drop off. At max hst there is too much spring for the set pressure and E.S. is bad.
 
Having recently set up a STD Vet .177 for FT work and wanting it set up a tad hot ( 10.3 @ 920 ) it took setting the Reg a tad higher to get it so the velocity was stable coming off reg as well any reg creep stability. At this setting Monster 13.43.s running @ 845 or so.

In my fooling around it became pretty obvious leaning on the power took a LOT more air and efficiency crashed really fast.