I remember going into one of those stores to check for parts for my (wait for it) sucked in scope
so I could modify it to at least get it to work.
They only carried cheap stuff (RP focusersand so-on), none of the real good quip. They couldn't even refer me to someone that could help.
"Got sucked in by high magnifacation when I bought my scope"
Learn't my lesson the hard way