I had to thin the top tree to even get the steer tube flush with the top of the triple tree. My steer "tube" was actually a solid shaft... So tapping into it was possible.
It looks like yr flush right now as it stands so if you thin that thing out you should be good.
I did all my rough cuts with an angle grinder and a cutoff disc, then I cleaned that up with a regular grinding wheel. Finally I cleaned it up with a carbide dremel bit. (use lube to keep the tool cutting well.) It wasn't fun at all but persistence pays off.
