colmo

Help please

I have an almost finished Gillow´s mitsubishi zero which I transformed into a 4- channel rc with a Norvel .61 and Hitec sub micros. ( a little heavy at the end, let´s only hope...). I live in South America, and it is very difficult to get the appropriate thinner for the Acetate-butyrate dope needed to fuelproof. Any ideas on a substitute for that thinner? The nitrate diope and thinner I already have.

Thanks a lot