Oh shoot, thought Dale said you were look'n into it. He was doing a triple quad mod on I think a sample X5 (maybe?) with the 25 driver, and ended up swapping the driver, then it all worked fine. It might have been in the big X6/X5 V2 thread, not sure now... Darn should try to find it...
Found it!! Post #1966 here: https://budgetlightforum.com/t/-/34532