Quoted from altan:

Wow! Interesting...
I believe this is, at least partially, expected.
First, later versions of the JD software specifically called out changing the timing of the launcher coils to prevent the fuse from blowing. Since you are running Deadworld mod, you don't have this improvement. So the fuse blowing is undesirable but is probably expected with L1 / L1AT under aggressive ball hunting. I haven't seen this myself, however.
As for why your JD is going into ball hunt mode, is your Deadworld mod working 100%? If I have balls in Deadworld, power the game off, power it back on... The game will use the crane to remove them.
Did you end up powering off the game with balls in Deadworld because it was acting weird?
Is the switch in the shorter lane working?

Quoted from PunkPin:

This may be a simple adjustment of the switch, on my dredd I was having the problem where when the plunger fired it would hit the switch in the shooter lane just enough to reactivate it, I had to bend the switch arm to sit lower then the plunger but still activate with the ball.
Also if I have balls left on my dead world when the game is turned off they will not clear until I try to start a game and it goes into ball search

Quoted from altan:

For clarity, I did mean the balls are removed after power cycle when start is pressed.

Quoted from PunkPin:

The ball search to clear the dead world would activate the shooter plunger, while you are down there checking the trough optos I would also manually push out your shooter plunger and see if it is making contact with the lane switch, if it is reactivating itself over and over that could blow the fuse.