> I have an A-174 and when it's centered, it's slightly
> wiggly/loose. I can see some sort of hex screw or screw in there
> - is there any way to tighten it up so it doesn't wiggle Please
> let me know. Thanks

Sorry - there is nothing that can be adjusted. The manufacturer of the unit
(ALPS) has not arranged for such possibilities. But there are jumpers on the
pcb that can be removed to obtain a voltage plateau around the center
position (i.e. the output voltage does not change for a small movement
range). For details please refer to the A-174-1 info page on our website.

Best wishes
Dieter Doepfer