No, the coil should handle it. Sand sown to bear meatal, though (easier said than done) See ya next week. The powder is tough.
Do a good job, though. Prepare every area where the motor mount will touch. This prevents the mounts from loosening the frist time the bike is ridden.
The powdercoat is thick! It will wear off of the frame mounts leaving the bolts loose.
I would also suggest using some "New finish" brand car wax on the freshly coated frame. It tends to seal it.
Can you post a picture of this when your done? I would love to see it!
What color did you coat it?