Originally Posted by
Kapusta
Make sure your chain is sized correctly (big/big + 1..... Google it... and consider your 36t cog your "big"). Since you put that smaller ring up front, you may be getting too much slack in that ring.
Thanks, that will be my next course of action. I can see how there could be an issue there, and perhaps this RD is just more sensitive to things being not quite right. Im still perplexed as to why i get the cross chain in 39 ring with either 24, 28 or 32 cogs. When these combos worked fine with the old RD. could the longer cage in itself create this problem.