Update. The "GreatWhite Beaver trapper" still has not caught the nuisance beaver!!! Fresh sign every day, and the 330 not touched under the tile. I asked him if it was a possibility that the beav was living IN the tile. Told him to stuff a bunch of sticks and stuff way up in there. Sure enough, all the sticks and crap were pushed out of the tile, and a lot of them added to the dam! Bet he gets him NOW!!! I'd never thought it........