"(I think the wording is "tubeless, bias ply type tires may be run with tubes" i.e. it permits the use of tubes, not require it. I'll investigate some more. Frank)"
Thanks, Frank. I just got a PM from Tim verifying that this is the case. I misinterpreted the wording to mean that you can use tubeless bias ply tires as long as they have a tube. Sorry for any confusion or trouble I may have caused with my wrong interpretation of the rule. I guess I should have asked someone sooner if it didn't sound right. I have been running tubes in my race bikes at Loring for 4 seasons needlessly. Now I have to decide if I will remove all the tubes now or wait till I change out the tires! Thanks for the help, I'll be at the "Harvest Event" in September with the "Snowblower Special" see you all then!
Steve