Yamaha Replacement Pickups

Hi,

I've got a Yamaha RBX6JM that needs some new electronics. I'm going to get myself a Glock pre, but the pickups are a problem. Yamaha 6-string pups are slightly wider than any standard EMG or Bartolini shape.

Has anyone had to deal with this phenomenon? I've discovered Lane Poor used to make replacement Yamaha 6-string pups, but alas...

Thanks for any help you can give!

Rob