The 10" Lx model is a very nice OTA (I used one for a few years) -some mirror slop but easily fixed with the spring/ screw mod.
Yes, the older Meade LX Classic is getting more and more difficult to support. The Y!group LX200 does a great job and there are many people who can assist in repairs etc.
http://groups.yahoo.com/group/LX200/?yguid=322612425
Unfortunately it doesn't work on a HEQ5pro...the OTA weighs in at 14.7Kg; far too much for the HEQ5 - I had mine re-mounted onto a NEQ6pro.
ken