My son has had a 2004 1800C for several years and used to ride quite frequently. His job took him overseas most of the year and the bike ended up just sitting in the garage. He is home now and has decided to try and get it back up and running. Rude awakening....his gas tank is full of rust. From past stories I have heard from other riders, I get the impression that cleaning it out is a MAJOR PITA. Is it worth trying and if so, what is the best way to achieve good results? Another option is a replacement tank...if anyone has a lead on a tank for sale please let me know.