I did a search for Syncro and saw most of the posts were in this forum (as opposed to the mechanics forum), so I'm posting here.

I cannot get my Syncro II left shifter to work. The right one (8 speed) works perfectly. The left one has absolutely no friction and therefore can't keep the front derailleur on the big ring.

I've attached a photo which I hope shows exactly how I'm assembling it. I haven't found an exploded diagram of my exact shifter online, so I'm hoping some of you can help.

The interface between the lever and the brass flat bushing (G) is really friction free. The interface between the "G" bushing and the lever itself is what creates the channel for the cable. There is no channel for the cable milled into the lever itself like in some versions.

I've installed downtube shifters before, most recently a Dura Ace 9 speed where the left shifter has a strong spring to counteract the spring of the front derailleur. I also installed some shifters I got from Velo Orange DiaCompe shifters which (if I recall correctly) used a combination of ratcheting and friction to keep the derailleur on the big ring.

Thanks for any help you can give. I'm hoping it's just a dumb mistake.