Well, I don't really know too much about the higher volume production. I purchased on account of the elk and simple what and where it is (the uppermost claim of Confederate Gulch). How much material can you move with that? I don't even know what a dry washer is. It would appear we are getting a highbanker this summer... The only problem is that the access is pretty much reduced to atv right now, depending on what the creek does this spring. Somtimes it fills in, somtimes it guts the channel down about 5 feet. We can continue this off 4x4 if you would like. snobowl@aol.com As for the procedure, the back VLAs are nearly impossible to get at, the tool MD 998782 or a home copy of sorts would be very nice. I'm going to see what I can find tomorrow. A simple bow square worked for the hardest one but it's aluminum and didn't hold up past 1.