proline? you are confused......

You need to go to rcproseries.com and email them requesting any number you want......
example: 5H, 023K, 99P, Anything.......
They will email you back saying if you can have it or not. When you email them give them a few different numbers to use so you don't keep going back and fourth with emails.

My number is 314T, my b-day is March 14th (3/14) and "T" for Tex