A few days ago, I went to swap the fuel pump to my Aqualine tanks and discovered one of the o-rings has a pretty good nick out of it. Set it aside and figured I buy some replacements this weekend, during which time it swelled. KTM is charging $57 for two o-rings, which is pretty ridiculous. Anyone have the size handy for ordering replacements? Based on my measurements it looks like a 2 3/8" ID X 1/8" (or Metric 60mm ID X 3mm) will work for the upper ring, but the swelling may have skewed the size. I'm guessing I want a Viton ring? Thanks for the help.