Trim Tab Play
As Bob says, they all have some slack in the cable that leads to wiggle in the trim tab. With that said, I posted a few years ago that the local FSDO inspector would not sign me off due to the approx. 1/8" wiggle in the trim tab. He was certain that it would lead to flutter. A month later, he returned with apparently a different perspective and signed the Cert. of Airworthy. It was certainly a low point after a 7 yr build- and there isn't an easy fix to make it go away.
Jim Diehl 7A
Lock Haven, Pa.