Oh, I can't sweep good but I'm getting there after a few hard years. I used to practice them all wrong and yesterday it just clicked. Try sweeping this...

9------------9---------------9--
--10-----10-----10-------10-----
------11------------11----------
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Do it down only first and remeber to lift your finger off the string immediatly after picking it. Muting is all important. After you can do this pretty good throwing in bends HO's and PO's a little scale run doesn't seem that hard. I'm sorry I cam off like I jerk but I just started playing decent sweeps and I am by no means perfect. I put some in the listening post if you want to hear and see.