Now that you suggested cutting a cheapy wrench down, IIRC, I did exactly that to get that top nut off. I didn't move the reservoir though. Make sure you bench bleed the M/C before putting it back up!! Isn't the upper hole on the mounting flange a larger diameter? It seems like they had a special nut for the top stud.....or a special stepped washer.
Jerry Rude
4005R
Looks like the same 1/2" nut. I know that the S2 has a different mount arrangement (discounting the angle box that moves the master out into the nose) but this looks like just being held on by 2 1/2" nylocs. Bottom one is nice and loose (no doubt due to being soaked in brake fluid..). I have the F10 master (and someone somewhere along the lines installed metric to sae adapters! Yay!), the remote reservoirs (i got the 6oz medium size...the more the merrier), remote mounts, the proper brake fluid resistant hose, caps (an extra one in case the gunnison adapter caps aren't the right size for the tilton kit and I have to adapt to fit the tilton reservoir, and the proper clamps. The F10 already has the tilton adapters, so, good to go there.
I figure grinding down along the edge and making it thinner (about the thickness of a tappet wrench...or call my local snap-on guy and pick up a 1/2" tappet wrench and just modify the width). It will be a project. Of course, it would be easier if I just pulled the body, right?