I realize this topic has been on many, many times. And I almost hate to ask again. I have a Toro 36" WB with two blades. Each blade is mounted into a channel that wraps around the blade and is held in place with a "cupped" cover with a slot that also wraps over the blade. A single bolt goes through these. I really want to try the double blades to see if the cut can get any better. Just how do you add a second blade to a setup like this? I just don't like fooling around with these mountings with the speeds the things revolve at unless it is done safely. I just can't see any way to add the second blade. Thanks for any info. Cleve.