Yes- I mixed and matched needles & seats- kept new needles, changed needle springs. Neither needle sticks- even after about 100 blow-throughs. Raised the floats a hair- were at 9/64- put 'em at 5/64- didn't look like enough gas was getting into the accelerator pump chamber. I fully intend to speak to Lars- I just need to break down and purchase vac. gauges, dial back timing light, etc... another couple a hundred for a one time use only deal. I realize it's necessary,but this is the last vehicle I'll ever work on.After this one, it's over. ..... but out of the 40 some auto's I've had, I've only experienced this tuning plague 3 times-Twice with this car (326, 455), once w/ an old Chevy in 1990- had a plugged catalytic converter. Course, never had a Pontiac before, either. The thrill is all but gone.