picture of my bulkhead connector attached.

Do I need to replace this bulkhead connector? the main 10 gauge wire was worn (frayed) on the interior side near the bulkhead . I have unwrapped the harness and replaced this wire. so the problem that caused the bulkhead to melt should be gone?

If i should replace the bulkhead connector where can i get one? looked on several sites and couldn't find these, the original drivers compartment harness is in really good shape so I am not replacing that to get the new bulkhead.

If i can reuse this bulkhead connector is there a way to "fill in" the opening a bit to help locate the female connector (interior side) to facilitate getting the engine harness aligned and able to mate with the bulkhead connector more easily?

Thanks in advance