vinnie is right, make sure that everyything is installed before balancing. Things like the muffler hanging out the right side will probably effect the balance and has to be accounted for. For weights I go to a local service station that balances tires and ask for the left over balance weights. I get a whole bag full for free. Some of the weights are fairly long. Just cut differnt size pieces and test until you get the one you need. I like to use RC56 glue because it stays flexible and won't let go. Have fun, Fast!