I know I read it somewhere, but can't find it (as usual) I'am having the c/p system installed as we speek on my 3580 b/h what is everyone putting there PSI at ?? I thought I read 60 or 70 PSI but can't remember. I know it 5 PSI per 1000 pounds, but I'm sure you guys have it all figured out and can tell me whats best. thanks