I'm just totally jazzed. I just bought an 8" f/6 Orion Deep Space Explorer (Dobsonian). Yeah, it's an old scope, but from what I understand, the mirrors on the older scopes were made by Discovery. I hope that would include this scope. At any rate, it needs two things to get it to viewing status. One is a right angle finder scope (on the way) and the other is something much more difficult. This scope has a helical focuser and I would like to replace that with a rack and pinion focuser. My problem is the racked in height. The last time we did this on an Odyssey, replacing the helical focuser with a rack and pinion one, we changed the focal point of the scope and had to move the mirror up. Then we had to move the "altitude bearings" to rebalance the scope. I would really like to not have to do all that again. I really don't want to put a lot of money into this, so I would only like to get a 1.25" focuser, not a 2" one. I do have a club locally where someone may be able to help me with this, but I was curious if you guys had any suggestions at all. Having had a scope with a helical focuser already, I'm not exactly jumping up and down for joy to use another one.