I had the same issue with mine (the terminals broke off deep inside the box.
It took me a few years to get it done but Me & my Dad rewired it , with help from radio shaq .
It air tested great, but it;s been almost a year since the fix & I have not tried it in the field yet.
Can't recall the wiring situation , but where the 1 AA Pack connected down in the box now has longer wire's ,where the connection is now near the outside on the battery pack.