Brookspw,

I posted my experience with the Porter Cable a while ago, and my experience was the same as yours.

The damn thing wouldn't spin at all if any pressure was applied - even light pressure.

And I couldn't agree more when you say, "but it makes it almost useless for what you really want it to do.".

I know the members here are very fond of this machine, but I still believe it's just an 'idiot-proof' machine to prevent the average user from screwing up and buring through their paint.

I returned mine and got a DeWalt variable speed electronic polisher. Cost me $289 at Sherwin Williamns Automotive Finishes Paint Supply Store. They carry paint / sanding / detailing supplies on a commercial basis to shops, etc. It is the only buffer they carry.
You will very rarely see a professional detailer use the Porter Cable-type polisher. They all use the direct drive type unit like the DeWalt or Milwaukee.

Besides, the Porter Cable unit is really a detail sander with the collet modifed.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".