I'm an ASSA member, but alas I'm not qualified to give you advice on this (my experience is extremely limted, and does not include any GOTO system). I can only recommend sending an email via ASSAchat email discussion list (assuming you are also a member) with your query. Either you'll get a response with the answer, or you'll get put in touch with someone who can talk you through it. I've found the ASSA to be very supportive.
If the weather this Saturday is good, you might want to take the scope up to Stockport as there's a members viewing night that evening, and chances are that someone there will have experience with an LX200, or at least be able to point you in the right direction of someone who does.
It's a bit of a long trip out there, so if you can get confirmation via ASSA chat that someone who's qualified will be there to help, all the better.
Else, hopefully someone on IIS will be able to help. Fingers crossed for ya.
