I picked up an OM-03MT recently, and would like to upgrade the bridge pins.  I bought a set of Allparts ebony bridge pins, but have not used them yet.  I have read on Websites such as Guitar Gal and Custom Inlay that Larrivee uses size 4.1 bridge pins with a 3 degree taper.  Does anyone know the Allparts specs (which are not posted online), or have experience using their bridge pins on their Larrivees?  I do not want to ream the bridge, and would rather have the proper bridge pins.  Thanks! 

Why don't you just try them and see if they fit. If they are too big you can always sand the pins down. It takes awhile but it's not hard.

That occurred to me, but the engineer in me would rather have pins with the same taper as the bridge holes to ensure maximum contact with the bridge to prevent the string ball from slipping, pushing the pin up (like a Martin), or getting stuck or flying out.  I'd rather not "ballpark" it with sandpaper and would rather use pins with the proper taper by design.  If that means buying different pins, OK; ebony pins are not that expensive.  Thanks.

Pins are cheap.  Experiment.

E. Shoaf