Welcome, mines a stella while your up!
Relative newbie to DSC myself altho have watched with intrest for a while.
I also have a 749s and i too made the same error.......adjust the chain THEN look for the torque setting i needed! :P
Ah well, you find some great advice and tips on this furom, theres some very knowledgeable people out there.
Have fun and roll on summer!