Its not really an exceptionally rough track. I didnt have any problems with the tires coming off until i got my new wheels. I noticed when I took them off my other wheels (same brand and style) the were really, really hard to get the bead off but their was no dimpling or scuffing. I think that they were just on their so long that they were just stuck that good.
I have a 165 RR, 155 LR spring.
I have a new plan of attack after talking to our top driver which doesnt involve screws. I will let everyone know if it works.