Carb boot on 85 bigred

[Footy]

I am nearly finished with having this big red ready to ride but I have hit an impass. When I got the 250es the airbox adn rubber boots that clamp to it were in a bucket. I know that the rubber parts can get hard with age and are difficult to install sometimes but I cannot get the boot that connects the carb to the airbox onto the airbox. I can get it onto the carb. I have tried warming it a little but it still will not go on. I was thinking about putting it in boiling water and then trying to install it. A new part is not available from bike bandit or RMATV. Any advice?

[Jmoozy27]

I warmed mine a lot with a heat gun. It should be able to handle the heat. Mine was stubborn and heat was the only thing to loosen it enough.