Got my Gryphon, Got Cpl Q's

[tg150]

We'll the day has come.. I got my Gryphon I'm so excited. i can harldy contain myself and its going to be a loong night before i can finally program it tomorrow. But i do have some questions and could use some advice..

My truck is an 04 Lariat, it has 373 gears. Originally it came with 18" wheels but i changed them out with the newer oem 20" wheels& tires, size 275x55x20 with pirelli scorpion tires.

My question is: during the initial programming after choosing the "Power Programming level" should i automatically choose "create a custom file" to enter my gear size and tire size? Or should i choose no and do it afterwards? Or not do it at all? Is there a default setting for the gears?

Also i did the equation for my wheels and tires and came up with 2546, is this correct?.. I did read something from Jack about a 7% squish factor but dont quite understand it or how to do it. I havent had the time to download pegasus yet and probably wont till tomorrow night. Can someone figure it out for me or if you have oem 20's what is yours set at.

Sorry if im asking to many questions.. Ty for any help and all reply's. Cant wait till tomorrow