I cut mine too about 2" from the bottom. It works great, to great sometimes. If I use pellet hops it can tend to clog some. On big late addition hoppy beers, I will take it out of the pot, clean it and then put it back for the late hops. Love it.
There was one knob on each side. I adjusted it to the half open position. Anything closer it keep jamming. I'm adding rice hulls just to make sure my sparge does not get stuck.
I purchased the 8 in large version to use in my boil kettle (20 gal). I through all my hops inside the spider, the when I circulate the boil to cool, I run out through the spyder to catch all the break material. Anyone else tried this?
I received my MM3, the set screws for the bottom roller was loosened. I read the on line manual about setting the gap, how do I calibrate and with what? I thought about using spark plug gap tools.