I have wheels I have taken tires off 2 or 3 time by boiling and never warped one. All so it actually makes the wheels hold up better. Have you ever talked to people that told you to boil your plastic parts to make them more flex able where they do not brake as easy. Keep in mind the smell with baking them and I have never had much or any smell with boiling. I would think you would get worse smell with acetone not counting the dangerous fumes. Boiling works great for me and only takes about 15 to 20 minuets of boiling. But what ever works for you go for it.