Re:
The rear end of the Original bike wore well, but with tweeks in frame geometry, e-stays creating as many problems as the design solved, and a want to both stiffen and liven up the ride characteristics even further, Chas was asked if he and the team were able to put some more time to the project.
Given the best on the table from the stable of Roberts was the D.O.G.B.O.L.O.X (and remained so until the companies closure), the solution was an altered designed mainframe and a significantly enhanced ride, due to the tweeks in the frames geometry and its carbon lay up further enhanced with the rear triangle with the two piece monostay and multi materials, its one piece horse shoe wishbone silver soldered and carefully mated to the front triangle using Formula one bonding materials.
The rear end of your bike is made of several parts, and with the two companies working together they were able to perfect an amazing machine. Using the Race feedback and with the joint knowledge from each of there respective fields, they were able to take an already excellent race bike and simply make it better.
IMHO you have a very very underestimated and grossly undervalued machine, especially given what went into it and who was responsible for its development.
Rest assured if it wore a YETI badge it would be dam near priceless i reckon...
(the Images show the new front end against a more modern D.O.G.S but was forwarded to me from the Roberts Frame shop to demonstrate, your actual frames rear triangle is made up of ..Composite rear stays--
---Extra stiff 4130 horseshoe to minimize brake flex
---Silver soldered Reynolds 753 stays
---Columbus SL monostay
---Massive clearances to eliminate mud build up.)