About tires... I got to thinking the same as cowboy. Bought a tire balancer and weights fom HFT. A tip for what it is worth, I use a hack saw to remove the old tire. Squirting soapy water on the blade helps a lot. P.S. the balancer takes some patience. and sometimes I have to rotate the tire 180 to get it closer. Lots of soap on the tire bead helps to insure a good fit during inflating,(use a brush ) . cheers