Naildriver

It's not that it revs high and only high. When it starts, idles fine. It's after I throttle up and then release the throttle that it won't immediatly return to normal idle rpm's. If I wait five-ten seconds, or if I quickly toggle the on-off switch, it will then return to normal rpm's. Will the above issues be causing this problem?

99% sure it's not that. Butterfly valve returns and nothing sticks, but i'll re-check and fiddle with it. Any other causes of the problem? Maybe something internal on the carb?

Try www.alfaheaven.com. Found a decent used tank for my 74 tx500 there. Once you find a tank. I would recomend skipping the over the counter tank sealer kits. Take your tank to a radiator shop and have them clean and seal the tank. Should be around a $100, but you will NEVER have issues with the tank rusting from the inside again. I would do this before you paint the tank as they wont gaurantee the paint job. They initially dip the tank in sulfuric acid to remove any rust. Hope this helps.

History: Bike has been sitting untouched and not prepped for extended storage for about 10-15 years. Just finished a complete breakdown/cleaning/rebuilding of the carburetor. Re-installed the carb and started the engine. Problem: Revs fine and sounds good, but wont immediatly return to idle. If you wait a few seconds, or bump the engine on/off switch quickly, it will return to idle. Throttle cables are not stuck and the breakdown of the carb was extensive. All ports were removed and cleaned thoroughly. Any help with diagnosis/resolution would be greatly appreciated. Naildriver