Hi Mark, thanks for chiming in.
The noise is a loud howling, somewhat like a bad automobile differential, but no grinding.
It's loud enough to mask the normal slewing gear sounds.
It only happens when slewing in the arrow "up" or GOTO in the same direction.
I have inspected the entire motor and plastic gear assembly,
as well as the helical brass worm, and it's meshing with the main gear.
Everything looks aligned and normal. Only when I apply light pressure,
to the motor housing (in any direction), dose the noise stop.
My other LX scopes (LX 90 and a previous LX 200) did not make this kind of noise.
I hope either you, John Piper or someone else is familiar with this issue
sound like the adjustment set screw need to be loosened. the worm gear may be too tight agent the main worm drive.
I have seen and herd this noise before and have done the same thing pressing on the worm drive and the noise goes away. adjusting the set screw with the spring will take the pleasure of off the main worm drive...
Iv also just opened my wed sight meademods.com