I run a few different presses, From a 6 color UV press to a 3 color S&T 150. The 150 is designed to be a quick set up, short run press. We have been having problems with # 1 unit toning. All new rollers. Stripes are good. When running slow it prints good. The second you hit run, toning starts and the longer you run the worst it gets. It's like some thing starts slipping, or some thing can't keep up with the speed. My brother has run the press for 10 or 15 years. I have run it for maybe 10 years. We both have 33 plus years experience in presses. We are dumb founded. Ant help or suggestions would be very much appreciated.