Timothy,
I have no experience of the Aztec, but if it has positive and reasonably strong lateral static stability (rolls well with small rudder inputs) then you can correct an out of trim roll condition by applying rudder trim away from the "heavy" wing. This will create extra drag so you will cruise more slowly, but if lateral static stability is strong enough then it should not be too much of a penalty. Likewise, if you find that the applied rudder trim is yawing you noticeably off heading then this technique is probably not going to work in an Aztec. Worth a try, perhaps?
Rgds
L