It's been almost 5 years since I ran my 90 Z TT and 10 years since I had her out on the road. When I went to empty out the gas tank before I turned it over there was nothing but some fumes left I the tank. I'm concerned there might be possible rust or other junk in the tank. I haven't really found any definitive way to clean it out other than just draining the gas. Any suggestions? I'd like to avoid pulling out the tank if possible.