testing SCT mirrors OUTSIDE of scope, is it possible and what ins. would I need?

I have a 14" Celestron SCT that I suspect has some sort of optical problem
like spherical aberration. I can't realistically expect to do a good star
test due to poor seeing in my area, and I lack the necessary distance to
place an artificial source. This beast is HEAVY and setting up on a regular
basis only to be disappointed due to lack of stellar diffraction patterns is
getting annoying at the least. The other day, a friend suggested removing
the mirrors for bench testing. Although I have had the scope apart before
(after first correctly nothing the secondary, primary and corrector
positions), I have never removed the mirrors although I don't think it would
be too difficult a task. I have a couple of questions: 1) If I were to
remove each mirror for testing indoors, what equipment would I need? Does
standard "mirror making" test equipment work with SCT mirrors? 2) Would I
even have to remove the primary or could it be tested from within the tube?
3) Has anyone else done this type of testing and can you provide a link for
guidance?

Thanks in advance. BTW, this scope is 6 years old and was purchased used.
I don't think the original owner realized that there was a problem having
always done wide field work, however I don't know that with absolute
certainty.

Ian