I think that has more to do with your bottom bracket spindle than with the crank arms. It's pretty common for the two crank arms to miss their respective chainstays by differing amounts. If you had a bottom bracket that allowed chainline adjustments you could center them, but that might also change your chainline. As long as your chainline is good on the R side and the L crank isn't in danger of hitting the stay, you're good to go.monolink said:I have XTR 03 with E type front der, so no spacers are used. But crank on chain side is 2 mm from swingarm while the other 5 mm. Has anybody similar experience ???