[DOORGUY]

I'm running a 4 speed toploader behind a Centerforce dual friction clutch with a Tilton HTOB. 1st to 2nd shifts fine but 2nd to 3rd and 3rd to 4th always grinds a bit before going into gear. I also have the same issues when downshifting but to a worse degree.
Does this sound like an adjustment needs to be made to the HTOB? If so why don't I have the issue in 1st and 2nd? Or does this sound like an issue with synchronizers in the trans or another internal trans issue?