I've got a set of bone pins from Bob Colosi that fit perfectly. Here's a link
link to bone bridge pins If you scroll down you'll see a table of applications. For Larrivee, Size 1, 3 deg. taper, .210" diameter, slotted.
I've also got a set of these Tusq pins on one of my Larrivee's. These are very similar to bone.
link to Tusq bridge pins You might have to email them and ask which ones specifically. They answer very quickly.