The distributor shaft shim washers didn't come with your Pertronics installation kit? Pertronics provided two in my kit. You might be able to get a .032 thick stainless steel washer from Lowes that will work. They have a better fastener selection than Home Depot. Or have pertronics mail you some.
Even if the Pontiac distributor rotates in such a manner that it pulls down I still think you should get it right the first time. If you don't fix the .052 end play to within the pertronics limit, you will always wonder if its causing your car to run worse. I've been down this road...drove it for a while with an end play of about .06...then pulled it back out to shim it right. I havn't had a chance to drive it yet with my new end play tolerance.
