why no 12.75:1 option for the toughbox Mini

[cpapplefamily]

Looking at getting the biggest gear reduction in the toughbox mini seems the catalog options only have S1 14:50 - S2 16:48 (10.71:1) I tried some random gear sets we have laying around and 15:50 fits the second stage as well for a s1 14:50 - s2 14:50 (12.75:1)

Any reason you can say NOT to run these gears in the toughbox Mini case?

What is the biggest reduction any of you have pulled out of one of these? I'm thinking about moving the motor to get a 12:50 first stage, or make a new box all together.