Here's a closer look
http://i652.photobucket.com/albums/u...ectGuntuff.jpg
The front was roughly cut back with hacksaw and then (roughly ) cleaned up with powerfile, the rear was roughly cut with hacksaw then machined on mill to give 0.5mm clearance.
You will note the large clearance to mag, about 6mm, (this mount is for up to 56mm scopes) works fine for me but not to everybodies likeing.
An easier alternative would be to use combined upright/reachforward(rearward) mount on front part of tube only, this would need about 25mm underside of hole to underside of dovetail. Last time I looked I think scscopes(? ) chinese supplier on bay had something. Have you asked gary/sammie, I would have thought they had it sorted by now.