[scottfab]

OK thanks to the OP in post 1 we see the backward install.
In post #2 we see a correct install.
By correct I mean one that does not bind (due to filing the edges
of the L bracket) and does not deflect the diaphragm at a angle.

Of course anyone can leave the actuators in wrong and justify it by knowing someone at the factory thought it was best but to me the issue
is one of root cause analysis. This was NOT done evidently in the factory.
Only an expedient solution was used. Root cause would be the excess metal at the short part of the L bracket. (I used a cut off wheel to remove the metal)

This is how I solved the problem and have not had sticking actuators since 98. It's good to see others have also come up with this same fix independently.

Bottom line there is no need for insults or cheap shots.
We can stay on topic and lay out what we know then let all who
read choose their solution.