For those of you that like to make things yourself, here's one I did today. Any decent fishing supply will carry fishing weights (I already had the weights). I took 2 2oz weights with eyelets on each end, cut the eyelets off, and hammered the weights flat and formed them around the inside of the wheel. Two of the 2oz weights was perfect for a 2.2 wheel. I was able to flatten/form them enough that they touched on both sides for even weight. I circled them about ten times with a strong tape and done. 4oz in each wheel. You can make them heavier just by leaving them thicker, maybe with 3 or 4oz weights.