Freestyle ski bogs out after jumps and tricks.... need help diagnosing

sooo, Im having trouble with my ski bogging out after any type of tricks and even if its just a really vertical landing, the worst bog comes after doing a 180 and landing backwards, cant even attempt a spin to flip because the spin causes the ski to bog and theres no power for the flip. The only thing I can think it would be is either water gong up the exhaust tube and plugging the pipe, causing a rich condition or starving for fuel due to the fuel sloshing away from the pick up. But it will do it even with a completly full tank so I doubt thats the case. besides the bog the ski runs great and has a greta tune, under normal riding conditions the are no bogs sputters or surges and it pull smooth but very hard. I ran this motor all last year in a round nose hull no no problem at all, but also had a b pipe with a stock waterbox on that setup. so the only changes are the pfp and waterbox and a freestyle hull, heres my new setup, any help or input would be appreciated

992cc 62t based motor with a cast dasa pv cyl
pump gas
dual 49 full specs (jetting is 140p and 130m with pop off around 20psi)
prok f/a
msd single channel t/l
power factor pipe and waterbox
kart tank with a single pickup to a mukuni external pump
3, 3/8 cooling lines in (2 to the ex mani and the chamber gets its own line)
 
I had a very similar problem with my ski. DASA 850, running dual 44's would load up especially on 180 nose stabbs and pirouets(sp), not as bad as your describing but enough to piss me off. I went to smaller jets and turned in my mixture screws. Cleaned it up just fine.
 
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