As Chris says the wedge does not need to be level but it is often easier if it is.
If you are having trouble with alignment and guiding with the Meade fork mounted scopes check you declination for retrograde motion. It is quite common and if it exists in your drive auto guiders can get quite confused if they need to reverse direction as in autoguiding.
This is often more prevelent in a set up that is very close to a perfect polar alignmnent.
Barry
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