Hi, I'm a new member and this is my first post. I have a 1990 ZX7 that I purchased new. It's sat in my mom's garage for a lot of years and I want to get it running again. I pulled the tank to flush it and here's my question. Is there some trick to getting everything out of the tank? I drained out the varnish and rinsed with some gas. I could see some rust in the tank so I tried to blast the loose rust with a hose (water) but I can't seem to get every last speck out. To me it looks like the lip on the filler hole keeps everything from flowing out. Do I just need to keep flushing longer? Or maybe flush it while the tank is upside down? The bike only has 7300 miles on it and looks like new, I really want to make it work. Thanks for the help!