With a $18 eyepiece holder, I was able to get a Baader zoom working with my Lunt LS50 with some extra in-travel left to boot.
You can see my thread either on Cloudynights: http://www.cloudynights.com/topic/54665 ... with-ls50/
or Stargazer's Lounge: https://stargazerslounge.com/topic/2753 ... with-ls50/