Stopping a front-loading washing machine from walking on a tile floor.

We had a lot of trouble with our front loading washing machine walking, even after being balanced correctly and placed on rubber (sorbathane) feet. As far as I can tell Shoe-Goo is acceptable for use on Sorbathane and we have stopped the washing machine from walking by gluing the front two sorbathane feet to tile. Woe to me if I ever try and get those bumpers off the tile though.