I found a nice site that describes the replacement of an NP-101 focuser with a new Feathertouch. Nice photos.
Check it out:
http://www.creatorsview.com/astrophoto/ftfocuser.html
Check it out:
http://www.creatorsview.com/astrophoto/ftfocuser.html
Michael Aaron McNeely
TeleVue Forum Moderator
Astromart.com