Discussions

The screw holes for my arms, are large enough, that the arms shift slightly - begging the question - will that interfere with the stability?

Cause if so, I'll glue the arms in place, so they don't shift. 

Or screw em in real tight.  But I'm afraid that if I screw em down tight enough to prevent shifting, that the aluminum arms will deform.  I suppose I could put blocks in there, and then screw em down real tight, instead of using glue.  (I wonder if those $40 SM550 frames from rctimer.com shift, or not)