QUOTE: Originally posted by trainwreck100 I have trouble with mine also. I will try shimming the back truck, and I would like to put middle drivers on that don't have flanges. Can you get wheels with traction tires and no flanges, or am I stuck with it like it is? I really dont think you would be able to use traction tires on flangless drivers The rear drivers with traction tires improves the pulling performance a great deal so I don't know what you would gain Although the question of flangless middle drivers is interesting.I have had the same problem with the older version hudson as i do the new one,and flangless drivers might indeed help with the tracking.If i was you I would e-mail BLI JImmy Hicks is the guy I have allways talked to very freindly and helpfull,I believe he is the head tech guy there.Let me know if you do talk to them and what the results are.