How much is a bit over? The construction is like that two of the blades are over two other blades and not fully against the paper. The side that is blurred, one of the blade is laying on the other two, for sure that couldn't be the reason?
Do you know if the paper should be folded under the red mark or should it be at line with the red marks?
The easel looks like this.
http://www.tiffen.com/Saunders_Clutch_Easel.htm
Malcao
We are talking 1mm to 2mm, no more. It has nothing to do with the blade sitting on top of the other blade. If you was to tap gently on the right side of your whole easel, moving it to your left by approx 2mm, the problem would probably go, but you may then get the same on the right side of the print. If this is the case, raise the head of your enlarger and refocus. the head only needs to be raised about 5mm, maybe less.
Open up your lens to its widest aperture, and switch your enlarger to white light, or take the filters out. By doing this your image will be brighter and you will be able to see where it is falling on you easel. In your case, the right hand blade is falling just short and needs to be moved left by a fraction.
Trust us, its not your easel
Hope this helps
Stoo
P.S Don't forget to put the filters back in, or switch off the white light and close down the lens before exposure. Sounds obvious I know, but there will not be a darkroom user on APUG that has never cocked up this way before!
Oh, and paper should be kept flat, always