Originally Posted by
Bill Kapaun
Just put a friction shifter in front and you automatically add a trim feature to positive shifting.
BTW- If your shift issues occur when using BIG:BIG or LITTLE:LITTLE ring/cog combo's, don't.
I would suggest riding on 1 ring for a week or 2 and then decide if it's really a good idea.
Friction shifters are great for triple cranks. An easy and cheap way to go would be to buy a left Grip Shift friction/ratchet shifter. I like mine much more than the Shimano Rapidfire shifter I replaced it with.