I d like to thank Mark and Bruce for the great service i received when ordering my new 3500 stall 9/11 converter- got it within a few days and after i reminded Mark that they had a 10% discount for the month of jan a day after i ordered my converter, they were kind enough to immediately give me a 10% refund on my purchase- thanks again, would not hesitate doing business with PTS in the future and thanks again.