I know this is going to sound like a stupid question but here goes....about 10 years ago I had my 383 out of my Coronet and cleaned it up with engine degreaser and painted it Hemi Orange out of a spray can (High Temp Engine Paint) Shortly after that the paint peeled...a couple of years later I detailed the engine bay, removed the motor, cleaned and wire brushed it down and sprayed it again...fast foward to now..it's peeling again...in both cases High Temp Engine paint was used....help...