I purchased a DH Comp about a year ago and the thing have been almost perfect. The only thing I have an issue with is that the chainline. Currently I'm running the stock cassette, which I believe is a 11-32T, with a 38T Blackspire DH ring up front. Also I've recently switched from the stock chainguide to a E-13 SRS guide which has been awesome. Anyways... I'm still having some problems with my chainline. for example the chain comes off the cassette if I'm the 2nd and 4th lowest gear if I backpedal. Now I know that there is chainline problems with most DH bikes, but is there any way to remedy this??? Also installing the SRS I had to file down the upper part of the guide in order to clear the chain. Is this normal? Any advice on setup would be much appreciated.