Hello,

I have problems installing Syncro II (C-Record I believe?) DT shifter.
I think all the required parts are here. The plate/mushroom shaped thing (how do you call it?) has a round and a keyed deeper section that I believe is for DT boss flats, but it is a tiny bit smaller, so it won't go on flats even using some force. Thus the whole assebly is loose.

Am I doing it right? I tried on two other bosses with the same result. Does Syncro II require a particular DT boss? Should the keyed part of this mushroom plate be filed a bit?

I have uploaded some photos to my album. For some reason at the moment I can't attach them directly to this post...