Have been back to Festool with my new TS 55 REBQ, they have measured the blade in the 90 degrees position, was fine. They can't measure the blade in the 45 degrees position, so, when it's okay in the 90 degrees position, they assume it's okay in the 45 degrees position. However, after buying the large Woodpecker square, dog benches for the MFT/3 and assuring that the MFT/3 is absolutely square (it is, I'm very sure, as well the dog benches as the woodpecker say so), alligning the MDF really nice on the table and doing some 45 degrees cuts, I end up again with this. And ow, I also bought a new blade for the 55, just to be sure. This is driving me crazy. I spent hours on alligning and doing just 4 cuts, just to be absolutely sure the table is okay and the MDF on the table is absolutely straight. Now I really don't have ideas anymore of what I can try. Maybe I am just expecting too much from this setup? All cuts in 90 degrees position are just fine. Also tried all the tips regarding the TS 55 in the 45 degrees position: move the base when the saw is not resting on the base, tighten the back first before tighten the front, push really hard on the base when cutting in 45 degrees to be sure the saw keeps its position during the cut, do a 90 degrees cut first and then the 45 degrees cut, go from the end to the beginning, so the opposite position for the cut. I'm lost. Is it my technique or am I too precise for these kind of cuts and is this the result I could expect?