I've got a built Allison in my LBZ that was built by Josh H. At top notch garage in February of 2019. Has 26k miles on it since rebuild. Truck makes about 530whp if I had to guess. Trans has been great but for the last 5 or so months when the trans is cold in the morning it will flare really bad from 1-2 shift and slightly from 2-3. Once it makes 3 or 4 up shifts it's fine. Holds power great. I have checked fluid level and it's perfect. I spoke with Josh about this a few months back before my warranty was out and he told me to bring it to him but I messed around and waited to long and now my warranty is up so that's on me. Was a bit difficult to find someone to follow me damn near 3 hours away to drop it off. Anyways anyone have any ideas?