I got tired of replacing the 30" blades every year or two at a combined cost of 50+$$$
I went down to a 28" blade and grinded down the arms to fit the standard off the shelf auto size...now I can go to any auto store or Walmart and get a blade at a fraction of the price...
its been over a year ago and have had no issues....
https://www.irv2.com/forums/f121/ace...23543-143.html
see post #2000