I have a question however on the balancing and you might be able too tell me. Usually the planes I have balanced in the past (or helped balanced) we balanced at the given point but with the fingertips only about 3 cm or so from the fuse on the wing.

When the people at the hobby shop balanced it they said you must balance it at the wing tip right across from the given cg (Still calculating the cg position from the leading edge at fuse side of the wing).

Which is the correct way - if you understand what I'm explaining coz it can be vague.