David, Didn't you get this other link some time ago?
http://skyandtelescope.com/printable...rticle_790.asp
Someone was asking about collimation again, so I posted it again.
We definitely need a sub forum on collimation, Mike, with ALL the available links broken down for Reflectors, Refractors & SCT's.......
Will save a lot of time... etc....
L.