Too complicated for the common man. Not everyone has all that specialized machinery just laying around at their disposal.but if you have access great. Again, lets have some perspective! 9000 rpm, yeah everybody here is spinning their engines to that. No. And if it were something someone felt they needed to do, Why spend time indexing a stud and buying a ball mill and other special tooling, or even simply grinding or using a file what have you, or traipsing around trying to find a machine shop to modify 2 studs? Just use a Dremel or whatever and a small bit and grind a channel between the two oil ports within the head stud holes. Yeah, that’s what I’d do. And there ain’t no concerns of breaking through into water yadda yadda yadda. Better than hacking studs. So easy a.........