https://groups.yahoo.com/neo/groups/...messages/63260
Plus Louie on this site was posting at one point about difficulties with the FSQ85. I think the focuser is too weak and flexes. FSQ106ED's also have a number of internet complaints about focuser flex with heavy imaging trains. I had one that was fine but I read complaints quite frequently.
Tak changed a focuser support from Teflon to metal to help with that.
Greg.