you got some vintage jag pups in that thing, thats awsome, your best bet would be to have a luthier re wrap the pup.
other wise you are looking at a 125.00 vintage pup replacement.
if you look at a jaguar the pup is actually mounted to the body and the pickguard like a strat or in your case a mustang.
the guard was definitly cut to accomodate the claw and the squared edges.
the U.S. re-issue jaguar pickups are pretty nice, i have an av jaguar and it sounds amazing but compared to a vintage pickup there are some suddle differences.
definitly try to have that thing re-wrapped if you can.
if you can't find anyone, i know of at least 2 people in st. lious MO that would be able to help you but they are pricey.
hope that helps