Thanks for the help guys. Anybody have any good ideas for a varmint guard? I was thinking of building one around the spinner. Kind of a box design.
Bearkat - go to the Academy on William Cannon/I-35 and get the Everlast Varmint Guard (folds into a flat square when not in use). THey are $19 on 3rd shelf up on back wall. They are great.
They also have low profile plastic funnels. I have one in mine. By getting one you will eliminate possibility of any mold issues due to little leaks and humidity. Its worth the price and piece of mind and will not decrease capacity more than 1/2 to 3/4 of a 40lb bag. At the price corn is right now. I would put no more than five 40lb bags at once unless you are positive nothing is going to tump it over, etc.
And if you havent bought corn yet - when you go to academy have them price match corn at Dicks on Been Cave.