I just bought a 1994 Tracker for the upcoming fishing season. The boat has sat for 2-3 years as the owner died, and wife didn't know what to do with it. I couldn't get it to stay at idle, as it would die unless I kept choking it. The mechanic told me after he tried to rebuild with carb kit, that it is probably warped and sucking air. He put a rebuilt carb on, and it ran fine. The problem is $600 for it!!! Still in shock. Is there any other way to repair the one on it, or could it be something else. ANY HELP WOULD BE GREATLY APPRECIATED!! 