I have a very old bike (88). The rubber boot that connects the carbs to the airbox is hard as a rock. It took me 2 hours just to remove the carbs because the rubber was so hard that it would not “smash†or bend to allow the carbs to move at all. Now I can not get the carbs back in. It is on a Jap bike and there is no room in there to move the air box or anything. Well to make a long story short I need to make the rubber boot soft again so that I can reinstall the carbs. Does anyone have any ideas???