I have a Spektrum 6030 servo, and I needed a longer arm so I got a JR splined alloy arm. The spline slides right on, and then has a teeny bit of play when the retaining screw is tightened up. Like half a degree or something; it's barely noticeable, but it's there.

Is that going to chew up my spline? Or is it no big deal?

Does anyone have some tips on marrying the teeth on the splines more tightly? Scotch tape? Cake?

Any help would be greatly appreciated. Thanks!