Animal Land KABAMARUKUN Hungry Hippo NISHIJIN Hanemono - shooter won't shoot

[candyflip]

Animal Land KABAMARUKUN Hungry Hippo NISHIJIN Hanemono

I finally got all my pachis out of storage as I moved back to the east coast, from the west. The ones from the last container, including this one, were now available to test. Unfortunately, I remembered as I pulled this one out, that it was in fact THIS one that had taken a tumble out of the truck in McLean, as they were loading it in.
'Whoops'... said my US agent...' The boys got careless'.
I quickly forgot about it - until today.

Damage is that the shooter won't run at all - everything looks OK, but the thing just won't do anything.
Everything else works perfectly, after I adjusted the game back into its frame, where it had unevely dislodged after falling some 4 feet on it's head, to the earth from the truck.

Thoughts on what to check/to do next?