Guys, reviving an old thread. On the parts diagram, which seal number are we talking about. I just returned from some long, high speed runs in the heat this past weekend, and ran into the same issue as described by the OP.
I have an Air Hawk 2 I used for a few years. Great shape. I'll be in NH on Thursday, In VT on Friday - East Burke. I can let you try it, because we are coming back through NH again on the flowing Tuesday. Gives you a chance to see if you like it of not.
I agree with BMAC. I lucked out. The person selling the RDL was just about the same size weight etc. Just be patient, they pop up from time to time.
Not sure about the unnecessary wanted/for sale comment, by whatevea.