Hi S mit
Not sure why you have bumped this one up - I thought your question had been answered.
Firstly thanks for everyone who had gave their input. I also rang around a few specialty car audio places and asked how they painted them, some send their sensors to the panel beaters for painting. Others suggested this method:
1. Wax & Grease remover to prep the sensors.
2. 2 coats of paint
3. 1 Coat of Clear
So i used that method and they came out perfect, i installed today and they were perfectly.
Calabar:
It had, but everyone seemed to have slightly different views on how to do it, and i didn't wanna paint them and then drill the holes then find out that they didn't work/give false readings...
Cheers guys