My drive is having issues hesitating when being shifted into forward after idling in neutral. It does not hesitate going into reverse. It also ****fs fine for a period of time after being loaded by an on plane run. After idling again, it hesitates. All linkage is properly adjusted, by all appearances. the shift interrupt switch seems to be working as it should.

Any thoughts?

It's ppssible it may be the clutch. Otherwise if all else is o'kay it is not drive related.