I am getting a white void about every 50 copies. Running letter speed. Completely voids the area where the print is. Also looks like it is reducing the copy slightly when it does do the void.What do you guys think?

any particular color that it is happening on?

I've seen this with bad drum couplers slipping on the drum shaft. Check the ends of the drum shafts for mis-formed slots. If they are not square replaced couplers and springs and shaft. I keep a few good shafts from used units.

I agree with the drum coupler probably slipping. There is a tech bulletin on this issue. Changes were made to the coupler and the spring.