[pmrid (Peter)]

Has anyone done this?
I'm considering it in order to clean the inside of the plate.
It's a new scope (i.e. I didn't buy it second-hand) and the plate has ever been removed but I can see the marks of finger-prints on the inside and also a smudging around the whole thing where someone has wiped it, in a circular motion, leaving a thin film of gunge. I am more concerned about the finger marks and the possibility of long-term dmage to the coatings through the slight aciity (or is it alkilinity) of the oils from whever's fingers left these marks.

Anyway, the question is about the removal and re-installing of the plate. It is easy enough to put indexing marks around the circumference using cut tape or whatever, but I am a bit anxious about the centering of the plate. The older Celestrons have little cork wedges that are used for centering but I understand that is no longer the case. Are there centering grub screws or anything like it?

Anyone??

Peter