A couple of issues with my 210

[gixxer]

hi everyone, me and a fellow racer at the club are having some issues with our rango's the first is the rear wheels somtimes just one rear wheel getting clogged up with grass inside the wheel and around the hub and causing handling issues, not sure if anyone else has had this problem?? there seems to be very little clearance between the wheel and hub any solutions will be a great help!! thought about grinding some more clearance but dont want to make the part to weak.

the second is air in the shocks i cant seem to get rid of it all no matter what i try by playing with toy cars for 20 about years and not had this problem before i must be missin summit proper obvious or old age is alot worse than i thought! thanks in advance if anyone can help with these issues

cheers john