I've recently bought a MIM Classic Player 50's Strat. I want to install a block to disable the tremolo but I've run into a problem.

The inserts that hold the 2-point bridge pivot pins were not installed flush to the body (see attached). In particular, the one on the bass side protrudes so high that the bridge is prevented from laying perfectly flat on the guitar body.

I need advice/suggestions - I'd like to perform the block-conversion myself.

Does anyone know, for certain, how those inserts are applied? Are they just hammered in? Any adhesive used?

Thanks

D-Ops