Well I hope your right Val... and they send you out a replacement quickly    will they want the old one sending back or just photos of the faulty one? 
don't know as I just contacted them today mate. Still, I'm not paying anything, that's for sure. 
  
  Your quite correct , there shouldnt be an issue with this.,  they should be designed to withstand heat and paint applications..After all it is subjected to oil spillage , coolants , petrol etc..