heres the lens assembly for one afaik
http://www.astrosurf.com/re/eyepieces_data.jpg
http://www.cloudynights.com/ubbthrea...8/Main/2872994
I"ve only pulled a few eypeices apart , though one was a zeiss with a paint flek above the baffle , simple design but still a pricey piece to be messing with .
When you work out the internal lay out you may have to sit the lens stack on a secured small piece of pvc tube ,so as you can insert the assembly in the upper barrel in one go, flip it and the lower maybe will sit on the upper and allow you to screw the two back together ( I'm guessing here to btw ) that its two piece upper / lower,very carefully with no force , a couple of taps here and there and some thought will greatly help,its very important you don't cock a lens or spacer in the barrels as it may never come out .
Once all clean a dry ,I find the best place to do this is in a dry bathroom, as theres little dust and crap floating round in the air , and if you shut the door none can hear you cry if it all goes wrong
good luck and take your time