Does anyone not consider that there is a difference between pattern speed where maneuvering and other factors come into play versus on short final approach speed say starting at 1/4 mile where a stabilized approach using the manufacturers numbers by design gives you a safe, consistent, lower energy spot landing (hopefully) every time and still enough energy to use a lot of spoilers if needed whether you are heavy or light to adjust some. If you are convinced YT is wrong for your airframe, talk to others in type before you decide to move it a knot or two up or down and after you are convinced about the accuracy of your stall speed vs the POH.
Carl, 7E