I bought a Craftsman 42 inch pro series mower a couple years ago. Had the "quick change" blades. Tis year was time to change blades. Had to pull mower deck out to figure it out. Took several hours to change blades instead of about 10 minutes with old type. Prom is that when I put it back together, being carefull to clean dirt out of things, and ran it the covers vell off of the retaining mechanism. One went into the bagger the other on the lawn. There are 2 plastic clips that keep the cover on. Has anyone else had this issue? I believe it is built by Huscavarna. I tried changing it over to regular blades but clearance to deck was wrong. This does not look like a good set up at all