My MIR bogie flats are bent up which causes some of the wheels to not even reach the rails and containers to not lie flats and tend to rotate on the wagon after a while. They are painted so I don't want to put them in boiled water and I have tried the hair dryer method but the resin returns to bent shape it was before I heated them once cooled. Does anyone have a solution to this as this problem is really doing my head in? Thanks.