From my experience, you may have abit of a job on your hands. I had an MC1 last year, off the bike, but the Ti bolt was seized in the wedge. I soaked it in Plusgas penetrating oil for about three days, applied heat with a heat gun each day and tried to undo the bolt. I got about half a turn out of it in the end and thought yes at last it's starting to undo after all those heat cycles and soaking. Then, bang!, the Ti bolt sheared just above where it enters the wedge. Ti has a rough surface and mixed with electrolytic corrosion, caused by two dissimilar metals in contact with each other, and of course the moisture corrosion that had occurred, it was fixed solid.
I had the sheared piece removed by a machining company I use and bought a new bolt.
I hope you have more luck.
Klein Attitude 91 BF XTR owned since 93, Kirsten BF, Adroit 93 Gator, Merlin 90 XT, Formula 1 92, Orange CW 92 OR/WH LX, Raleigh Metropolitan 87 Burgundy, Giant Super Sierra 89 XT, DB Axis smoke XT, Overburys Pioneer 89 DX, Dale 88 Suntour, Saracen Trekker 88 Deore x2, Tuff Trax 87, Dale Syn Hi-Mod 12 Ultegra
PROJECTS Funk 90 Centaur, Klein Rascal 93 Gator, Att. 90 Dolo, Adroit 91 Backfire, Adept 93, Kirsten 89, Palisades Trail 88, Trimble Inv4 88.
For sale XT NOS Shark Fins viewtopic.php?f=2&t=315332&hilit=Shimano+shark+fins