[SML] S4 bench focus...

[Steven Hood]

Lighting folks,
Have any of you had an issue with the outer (XY) knob/nut seizing the aluminum hub casting? We have... I've had to drill out 3 of them this year - all from units that had been assigned 36 degree lenses. It seems like that hub casting is heating up more from having to pull the Z adjustment so far into the reflector and seizing on the outer nut as a result. Is there some way to prevent that deformation?
TIA,Steven R. Hood
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