Right ! A lovely read of the practical use of the Playbook, in this case. And that's what matters...the use you can make of it , its compatibility, easiness of use. Ultimately satisfaction that the product you invested in works for you, makes you more efficient and proud. Well done Dave.But...-300C ? Thats cryogenic. Dead. Solid ice. You meant -30şC for sure...not even your Playbook.