SV: Odd pin block

[Ron Nossaman]

> There are manufacturers who did/do not drill through the block and 
> others who drill first a small hole all the way through and then drill 
> the right dimension partly through the block. They might look as they 
> are drilled through, but it is only this "fore-drilling". Many such 
> pinblocks have been damaged by tuners who punched loose tuningpins down 
> a little not knowing about the the 2 X drilling.

What manufacturers do this?
Ron N