I'm trying to set up the synchro shifting for my road bike. I have a 52-36 and 11-28. It does fine when shifting up at 36-12 (3.00 gear inches I assume) to 52-17 (3.06). Its pretty seamless. On the way down is where it seems to have troubel. It's currently set to shift at 52-25 down (2.08) down to 36-17 (2.12). Seems to result in a little out of control spinning for a second.
Anyone encounter this and what do you have yours set at?

thx