sounds good mike, ive found that i do more collimating with the locking screws than the collimation screws, and so far ive had to collimate it every time i set it up.
have you noticed if it holds collimation better with the knobs?
heres a link to the knobs (for 12" gso), springs avaliable from them also
http://www.bobsknobs.com/Meade/Newt/MLB12.htm