Hi! Can someone please explain how to use these lamps properly! My rough understanding is you paint the panel, wait for the flash period and then turn the lamps on. I've also read you can set them to half power during the flash period?? Can they be turned on whilst in the booth?. I spray in cold conditions in the lovely English weather so need to rely on the heat from the lamps as a heated booth isn't available. Any suggestions on the best techniques for achieving a finish??