> Second Option: You will need to acquire a Tubus Disco, this rack is quite hard to get inside the US right now,
> but should be available in Europe. The standard length Bob quick release should be long enough to go
> through the Disco brackets. However a combination of washers and longer bob quick release might be
> necessary to avoid any collision between the rack and the trailer fork. I cannot test this being we no longer
> have any of the Disco racks in stock.
I took a look at the Tubus Disco on OrtliebUSA.com and it appears to be closer to what I want. I will search around to see if I can find one in stock somewhere in my area or will order one from elsewhere.
For me, a better solution than force or heat bending the Santana fork is to fabricate a new fork from scratch based on a custom skewer of the proper length (longer than the Santana skewer). It would be a lot easier if someone built a solution but I would guess there is little demand for it.
I am not worried about losing warranties on any of the items purchased for this project, including the Trek 4300 Disc and its components. Disc brakes were required for this bike and many of my problems so far have involved finding work-around solutions for problems that never should have existed in the first place (e.g., removing mounting lugs from the bike forks designed for disc brakes, making it difficult to mount front panniers). No one builds exactly what I need, so I have had to make modifications or design and build new components as necessary.
I can post instructions for solving the problem on my site a bit later after I finish making the new assemblies.