I want to set up my Hustler 52/20 with double blades. I am confused as to the configuration. I would think that I would cross the blades (gator blade on top of stock blade)---like this "+". A "pro" told me I should just "stack" the blades, one on top of the other. Are both set-ups used and if so, which is the best way to go. Also, do I just torque down the bolt to keep them from twisting? Thanks a lot for comments, you all have been very helpful in the past. BTW, I asked the dealer about this and he did not know anything about running doubles!!! NO, really!!