Good news and a large helping of humble pie for me.
Decided to persevere and refitted the B Sqaure mounts......every thing else is finished, a nice accessory rail let into the (now stripped and oiled) forestock to mount my nice newly fashioned...walnut... palm riser.
Spent ten minutes at the indoor range and achieved a windage zero within ten minutes with no adjustment to the windage turret on the scope. Elevation was just 24 eight'th MOA clicks out so dialed that, bang on zero, picked the gun up byt the scope, slapped it around a little, rechecked and still bang on.
So I take it all back
Still say it should be easier though, but thats probably just me and my skill levels. Trick seems to be keep all adjustments very tiny indeed and all grub screws quite tight.
Will try and post pics later
All done http://suprfile.com/src/1/75pige0/Palm Riser.jpg