Hey RC get a screw driver and slip off the little 'c' clip on top of the wastegate where it goes into the exhaust housing, slip off the rod and wind it out 1.5 turns on both turbos, that'll drop the boost down to 6-7 psi then itll hang on better,
what fuel are you running in it?
I allways ran optimax in it, dont know how much difference that made butits not much dearer.
Can you hear it pinging under boost? That exhaust rattle you spoke of eariler wasnt pinging was it???

If you havent altered the dizzy and are running good fuel in it, it shouldnt be