k this is not the subtrim issue. the subtrim issue locks up the radio as your are doing subtrim on channel tri and get past -60. this issue locks up only with the specific settings and only while trimming at full throttle. i can change any setting like the expo settings and the radio will not lock up. but with these exact settings it will lock up. i was not using neg subtrim. the problem they have posted on their boards on the radio is only if you use neg subtrim greater than -60 on channel 3. i even called to verify this and ask if i would be ok if i just didnt use neg subtrim and i was told i should be fine.