AMB got us all....hook, line & sinker......no escaping.......even ROAR has it in their rules to use AMB PT exclusively on all regionals and nationals races, if you ain't got AMB PT....you can't race ....ROTFL.
But, why the need for 4 PT's...? I got 1 in my car and an extra, just for back up just in case .......just in case. That one is even in the original plastic holder never been use. Thats all I have , 1 in use and another 1 for back-up.