I just received my Shimano xt drivetrain and I'm adding it to an external bottom bracket. I'm replacing an internal bb that came on the bike. I've dealt with externals before but only with bikes that came with external setup already. So my question is there a for sure way to snug the non-drive side crank arm so there's no play but not too tight to where it won't stress the bb? I watched a few videos and understand but wasn't sure if someone here had a method of doing this so it's just right.