@ Batmanacw,
Might I ask what your experience with tailstock drilling had been on your lathe? The reason I ask is that I also have a 1030V, and I get a ton of chatter anytime I try to drill anything 1/2" or larger. The tail stock just doesn't seem to be rigid enough on my machine. Everything is locked down (except of course the quill). The chatter is so bad at times it'll vibrate the tailstock locking lever loose. Asking to see if this is something that is common to the 1022/1030 machines, or if I'm just lucky.
Does that 250-105 holder seem to be sufficiently rigid, even with the compound slide installed? Compound on mine was a hot mess. I ended up re-engineering/overhauling mine. Installed thrust bearings, needle bearing for the leadscrew, remade the front plate, cut a new Acme 7/16-20 lead screw, new leadscrew nut from 932 bronze, and trued up the dovetails & gibs. Now it moves smoothly without the gibs needing to be overly loose. Gained a bit of additional travel as well.
Curious if you're trying Gotteswinter's cross-feed drilling technique due to similar experiences with chatter, or another unrelated reason? Certainly a good solution to the limited quill travel in the tailstock. Edit: You answered in the post above while I was typing.
Really like your approach with the multiple MT2 holders. Well done sir.
Dave
WA