My J4A (now flying) has that infernal jackscrew/speedometer cable/overhead crank/indicator drum and tiny block and tackle for the indicator arrangement that must have been cobbled together at Piper by the night crew. It is conceptually a lousy design concept in that there is no end stop without messing up the whole thing, requiring complete disassembly (preferably only done when recovering it) of the airplane.

I have thought of placarding it with "Only the Owner is Allowed to Adjust the Trim" but the humor and my own misgivings have slipped by me.

What do other people do with this abomination? Fix the trim to ground adjustment only & hand fly the rest? Any ideas?