I want to buy the Festool 1080 MFT table and make it larger using the 79" extension rails. Has anyone done it, and if so, will the table be supported adequately by just the two sets of legs or is it necessary to use another set in the middle to keep the rails from deflecting? Also it looks like you would have to cut down the second board for the top to fit correctly. I read the procedure on the Festool website for making a larger table, but I dont need one that big/wide and this one would be less expensive to make.Thanks for any input Creekers.