Ray you did my 821b and fms for me about a week ago.Man that 821 came to life after 5 heat cycle's and 3 tanks.It just fricken rip's.I'll get on that fms later and let you know how that go's.You do great work at a awesome price and for that i thank you sir.You and Mark from PowerHouse are the only one's that do work for me and that's the way it going to stay