No idea MF, I have done a few that way and they work fine. I think the PT modules might last longer because they were fitted down low on the motor where the fan helped keep it cool as opposed to the FC's ," oh I think we will put this electronic device on the underside of the plate, directly above the barrel where most of the heat gets trapped with no air flow over it", Not the best of ideas, as far as we are concerned, but as they got past the warranty period that was all Victa had to achieve