Have never tried shifting to small chain ring and either smallest or next up cog because years ago I heard it's a no-no, too much angle - but just recently had the bike in the shop for another issue and while on a trainer stand shifted through all the gears and sure enough got chain rub on both those cogs - a web search points to either the limit screws or installing a spacer on the BB but also I was thinking about loosening the clamp on the FD and turning it slightly .

What say you all ?