I recently purchased an intune i-1000 from Hemifever Tuning with custom tunes for my 07 1500 4x4 ST 4.7. I had Superchips previously and didn't have any issues whatsoever. After installing the Diablo canned tune(i haven't got the custom tune emailed yet) i noticed noticed that my transmission has been acting strange. Sometimes when i put it in reverse i feel it shift i start backing up and after about 5 feet it feels like it engages again and pretty hard too. It's not slipping and the trans is up to date on fluid and filter change. I don't have a clue whats going on here any help would be appreciated thanks.