Looking for some advice. Just bought a second-hand MFT3 of ebay. Bit scruffy but they don't come up often. Had to by a new top as it had a solid piece of 25mm mdf but not sure how it should be fixed down. The original top had a 6mm insert in each corner and fixed down with cap headed bolts. New top has a 8mm holes in each corner. Do I reuse the threaded inserts? Only parts diagram I can find doesn't make it clear.