Okay guys....adding more fuel to the fire. I was making a call on one of my customers today and they had an old piece of equipment from Europe. I saw some familiar clamps...take a look....

Here is the webpage....
http://www.norma.co.uk/Englisch/produkte/31.htm
Apparently these come in various widths...looks like for our barrel size, the width would have to be 20mm. Do you think thats too wide?? The hose clamps on my rifle are about 15mm wide.
Oh yes...here are the updated pics....


I think its pretty obvious now that the clamp is indeed on the MPP. It still needs to be adjusted, but the back edge of my scope is now a LOT closer to the line on the Webley where the barrel meets the main housing, which is where it should be.
One note about mine...it looks as though the hole bored in my HS blaster is not parallel with the gun. You can definately see that my MPP tube points a little up. Not sure what I can do about that.....I will think of something I'm sure. Well, more comments please....