Electrical Team Rush ignition upgrade, but MSD Blaster 2 coils failing

[CJ5 Tom]

Installed the Team Rush ignition upgrade many years ago. Jeep not driven much. It is at hunting lease now. But, since being there, at least 4 of the MSD blaster 2 coils have failed in past 4 years, and we cannot understand why.

We confirmed the head is properly grounded.
The coil is mounted upright.
6AL is wired directly to battery (yellow top)
Voltage is good

What would be a replacement for this coil?

 

[Belizean]

I had that problem also. Got rid of theAL6 and coils. Need to sell that stuff. I bought extras for road trips.