I am still not sold on the double blade idea. I have read all the old threads I could find, but I am still left with a few questions. What happens if the lower blade hangs out from under the deck, this does not appear very safe. Also, what about notching the blade saddle to accept and locate the lower blade, it seems to me that full contact between the two blades (vs. a washer) would offer better support to both blades as well as decrease the chance of slipping. I still need to be convinced as to how well this set up clears wet grass from under the deck. Has anyone tried doubles on an Excell 251 or Shortcut? If so I would appreciate some feedback. THANKS GUYS!!