Hey guys, I have a job tomarrow to restretch some carpets a competitor got wild with an old rx unit. I havent stretched carpets in forever. I always avoid carpet repairs because everytime it is always expected to be a freebie. But, I was cleaning a 3600 home and a customer saw the van and just wants stretching done down the street. Charge by the room, foot? and how much should I charge these days? Thanks in advance!!!