[BDM]

Bill, yes too much tension will cause roughness as you say. It's pulling up on the shaft. Try loosening it and re-adjusting for slightly less tension. I was playing with my parts set, and I can get it pretty smooth without slippage. Make sure there is NO grease on the tuner turn-stile wire(lack of a better word). It's a little tedious, but just keep doing it ever so slightly.