I don't know if all of you with Cub 22 or other IH mowers have heard of a Triplet end section. That's IH's name for them. They have made them for years. They are made to stop the cut grass plugging at the outer end of the bar that happens when mowing thick grass. Years ago I used to have to stop and get off the Cub, and clear the clog out by hand. They invented the Triplet to solve that. It works really good for me, hardly any plugging using a Triplet. It is wider than a regular knife, so it sticks out the end a little farther when mowing.
I asked about them today at my local Case IH dealer, the part number for the light duty serrated one is 467458R11, and it costs $6.56 here in the west. If you have plugging problems at the outer end, you might try one. Here's a pic of it from an older IH brochure.
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