Leak under front lower right side of dishwasher

Did search for how to fix leak, found PartSelect.com. Many stories about problems with gasket and grommet. Ordered gasket and installed it easily just like the video on PartSelect.com showed. Ran dishwasher - it still leaked. Ordered grommet and installed it following guidance from others on this site (thank you). Ran dishwasher - it still leaked. Searched for other causes. Made sure dishwasher was level and not overfilling. Ran dishwasher - it still leaked. Did another google search. One site said to check for a split in the lower spray arm. Sure enough, that's what I had! Ordered new spray arm and easily removed and replaced the old arm by unscrewing the plastic cap that holds the arm assembly in place and then removing the arm from the plastic clips that hold it in place (it just snaps in and out). Reversed the procedure to put the new arm in. Ran dishwasher - no leaks!