I have an 09 Charger 5.7L, and my son has an 09 SRT8 Challenger. He has broken off his engine dipstick handle once already, and I can see it is going to happen to me, too, soon if I don't fix it first. It seems to stick much worse when the engine is hot. I'm tired of only being able to check the oil level when it is cold. I think the best way to fix it would be to have some kind of an expanding mandrel to open up the end of the tube just a couple of 0.001". Can anybody suggest how to do this?