Hey Folks - I have an issue and the work is backing up...

I have a Makino S33 with a Fanuc 18I-MB control and I have an issue with corner rounding. It's kind of weird though in that it starts when the program has looped once or twice (it has a pallet changer). If I run the program without looping it, it doesn't seem to be as bad.

The control has a setting where I can change from High Accuracy to High Speed (on the control) as well as a M268 code to start high speed machining. Changing these does not seem to make any difference. It will screw up the profile of a hole at 19 IPM.

Any sage wisdom from the community???

Many thanks!!!