You might be able to contact the same fellow I was dealing with at Tasco earlier this year to have my AZ-EQ5 gear mesh tuned:
Eng. Adriano Massatani
Technical Service Manager
Mon/Tue/Fri
amassatani@tasco.com.au
P: 02 8978 7507
F: 02 9939 2972
A: Tasco Sales, Winbourne Estate, Unit 6,
9-13 Winbourne Road, Brookvale NSW 2100
www.tasco.com.au
He was great to deal with and very helpful.