so i just built up a 2016 Cannondale SuperSix Evo Hi-Mod with SRAM Red 22. but, as i am getting everything tuned, i notice that the chain is coming off the lower jockey wheel of the rear derailleur when i am in the big ring and the last two sprockets (23t and 25t of my 11-25 cassette). i first thought it was the rear derailleur hanger, as shifting was also poor up and down the block, so i got a new one (i bought the bike as a complete bike, new old stock, and it arrived with a scraped rear derailleur, so i though maybe it got bumped in transit-- i never actually checked the alignment). after having replaced the derailleur hanger, shifting was better up and down the block but to my disappointment, the chain still slipped off the 25t sprocket, and also slipped off the 23t sometimes still... i then decided maybe it was chainline, so i pulled the SRAM Red 22 crank, took off the wave washer from the NDS and replaced it with a 1mm shim. put the crank back on, the chainrings were definitely further inboard, so i hoped this would cure the chain from slipping (it slips outboard), as the angle of chainline would be less drastic in big-big (i know, not supposed to crosschain, but it is supposed to be ok with the Yaw derailleur, so i would like it to work). but, unfortunately, the chain still ships off the lower jockey wheel, outboard.
the set-up (everything is brand new, by the way)
SRAM Red 22 rear derailleur
SRAM XG1190 11-25 cassette
SRAM Red 22 crank 52/36 SRAM chainrings
SRAM Red Yaw front derailleur
Campagnolo Record 11s chain
any ideas? is it because its a campagnolo chain? is it because the BB30a on the SSEHM makes the chainline nasty for non HOllowgram cranks? should i go get the derailleur hanger checked anyway, even though it is new? is it....?
thanks in advance,