Hi Guy's, Today the press ran flawless. No cylinder drifting, first time in 7 yrs. Both units (3/6) giving us trouble held rock solid! The tec form heidelberg was in today to put on a refined cylinder jacket on out perfector and I spoke to him about our problem on the 6/c. (I will write up the procedure that was used to install the cylinder jacket soon if any one wants to know how to do this job) The tec said that there is 9 presses state side and another 2 dozen presses world wide with this problem and this is the first time that anyone has had any positive results curing the problem. (Thanks, Steve. I showed the tec your information) In fact he said next week they were going to put all new grippers in a press with the same problems, this is after they just replaced all the helical gears, the outer gears, springs,bushings, pins....everything on each unit! He said that they still have the same problem with all units on this particular press. Thinking about Steve's advice, I asked him if they had coated all the parts they installed with a good synthetic grease and he said, no there completely dry as specified by engineering. In fact he said that all the newer presses do not have the zerk fitting at the plate cylinder anymore, there is just an open hole that the engineers say will get oil from the dripping bath. I told him that my thoughts were how is the oil bath going to deliver oil in the gear if it is spinning at 12000 iph and even if anything got into the gear, i would think that through the Centrifugal force generated, it would just push the oil out of the gear and he agreed. He was very much impressed with what has happened with our press and was going to call engineering to discuss greasing the other affected presses. I'll keep you posted if anything happens. So thank you to everyone for helping out with this problem!!! Your the best!!!Bill