Looking for any info, specs or tips regarding mounting hardware to a new Ludwig Legacy kit?

• Are there some type of specs or measurements for drilling a 14x26 to install a 70's Ludwig rail consolette and cymbal L-arm? Also drilling the 10x14 for a bracket.

• Any tips for minimizing chipping while drilling 3-ply drums?

I'm not looking to start another drill or not drill debate. I will be drilling regardless. Just looking for any advise for those of you who have done this.

Also if anybody knows of an experienced drum tech in the Chicago/Milwaukee areas that have experience doing this that would be great.

Thanks.