I had a BD Towmaster allison installed in late 2025, the first unit never made it out of the shop, working with BD tech they dropped the pan for inspection and it was determined it had no line pressure. A replacement was shipped after a month, that trans would not let the shop start the shift relearn process and had a shift shaft seal leak. BD tech had them try and drive it which made it set a trans code right away, they determined shift solenoid issues, and stated they were having problems with there shift solenoid supplier. They shipped out a replacement valve body, which got the trans functioning properly again, each instance in this in this process took almost a month each issue to process. It is now May of 2026 and no warranty labor has been confirmed to shop performing the repairs and my truck has been stuck at shop waiting.