Alrighttttt, so I boiled them for 3 mins each tried to put them on, and its so DAMN tight....they would get stuck near the ending
like all of them...so i ended up boiling them as a whole ( with the wheels on too lol ) this time i boiled for 4 mins and they easily went on/off, however one wheel did warp just a little bit, however it doesnt make much difference as its minor....