I count 28 pins actually used in the schematics? You might want to go into the machine and double check the schematics too. I have dealt with Keith enough to know that when he says you have more than you need, he is probably correct. Problem is, he doesn't take the five seconds that it would require to explain things. So whether he is right or wrong, the terrible customer service will lose K's more customers - and rightly so. He treats me like a moron every time I dare to ask a question and I literally work on rockets for a living.