After 15 years, I finally started on a long-thought-out upgrade to my 6" f/8 Newtonian. This is the one that was featured in Sky & Telescope in March of 1999. I built it in 1998, one of a batch of two (I gave the other to a friend who did some CAD work for me, long before I went back to school to learn to do it myself). After 15 years, it needed some TLC, as well as a focuser upgrade. I am replacing the old 1.25" helical focuser with a Wyorock 2" low-profile Crayford. The focuser swap was easy and straightforward, just requiring a larger hole, with it's center moved towards the primary mirror 1/2" to put the prime focus where my eyepieces could reach it with the slightly taller Wyorock. The new hole completely engulfed the old hole. It also means making a new secondary holder since the old helical focuser had an integrated mount for a single-stalk secondary holder. Again, no big deal. I'm sticking with the single-stalk design although the new one will be screw-adjustable, rather than just bending the stalk as the old, traditional one required for collimation. I was disappointed to find that the self-adhesive flocking material that I had lined the inside of the tube with 15 years ago was pulling away from the tube interior wall. Over the years I'd re-stuck the odd corner that came unstuck with either double-sided tape or contact cement, brushed-on. But now large sections were coming free. It was time to re-line at least the top 1/2 of the tube. I had divided the tube into 3 sections, with glare baffles made of turned PVC. This allowed me to use 3 smaller pieces of flocking instead of one large one, which would have been a pain to install neatly. Glad I did that all those years ago. Even with a heat gun to soften the old adhesive, some of the flocking was stuck for good and only the top layer came away, leaving a paper layer. Grumble. Nothing is easy. My solution was to employ a wire-wheel brush on my pneumatic barrel grinder. Works great, just messy. I have to blow-out the tube interior after two or three minute work sessions, to remove the piles of shredded flocking and aluminum dust that accumulate. It's going to take a while, but will leave me with a fresh surface to attach the new flocking, after a thorough de-greasing. I think I may also install a new finder. The old one is a home-made 40mm job with a right-angle prism and glass reticle installed an old Edmund pre-RKE 28mm Plossl eyepiece. Thinking of a 55mm home-made finder with a commercial 27mm illuminated reticle eyepiece, in conjuction with either a mounted laser or reflex sight (red/green dot type). Stay tuned, photos when the refit is complete.