I have a 34-50 compact SRAM Red BB30 crankset with an 11-25 Force cassette. When in the 34 and either 11 or 12, I get chain rub. It's not rubbing the FD, it's rubbing against the 50 chainring. I think it might be because the Red chainrings are so huge.
They supply 5 spacers. 3 go on the non-drive side normally, the other 2 are extras in case your BB shell is faced wrong and you can't get the crank arm tight enough (run out of threads). Is there any reason I couldn't put a spacer or two on the drive side to fix the chainline?