has any body else been running the natural rubber tyres on no mag gloss painted track, brass and plastic chassis, what do you think? they look like spongies but with more grip glueles. maybe this should be another thread but does anyone run jell claws same parameters as above. their not sillys so do they come under rubber for club racing. well thats the lot , 1 finger typing takes a while. cant wait for any input. john.