isnt boost'in oz near parafield airport near paddys market, they'd be the best bet seeing that there a gemini mechanics and have a gemini drag car, but i moved from adelaide 4 years ago so could be wrong
What suburb do you live in?, that would make it easier to make a recomendation. ps i can get from Happy Valley to Saisbury in 40 min, how slow do you drive?
head up magill road turn left at the liberty servo then prob 75m on the right there is a mechanic, with a gravel drive way, try there, they have done a few things no charge.
if ya can't afford much offer to clean parts or detail customers cars, i did that when i was getting my V8 Vl done, so i only paid for parts. You also might learn something.
Ok, just in case someone is looking for this later. Found that Payneham automotive in Evandale are great. The owner mechanic owned several gemini's 'in his days' and is very happy to work on them.
Took it in and they did a great and affordable repair and tune.
Cheers
Marco