[Q] one max on t mobile. topic

I'm currently using my bone stock untouched Verizon max on t mobile. Looking for a rom that will work well on this carrier, or better than the stock Verizon rom in global mode. I did put in apn settings however mms msg's are hit or miss as well as lte. I get lte randomly, but mostly stay in "h" but the factory Verizon rom won't let me edit carrier code settings (310-260 for t-mobile).

So in the short if anyone has successfully done the switch to t-mobile with their Verizon variant one max and what rom worked the best for you or worked well in general would be appreciated.

Thanks