Hi marie,
From UHS Hints: Looking at the measuring stick above the fresh dowel in the lathe, the blade's position seems to begin before the 2 1/2" point you are interested in. You'd better move the blade once to the right.
See if that helps you. If the cut appears in the wrong place, move a fraction further to the right and try again. Make sure that the switch on the right is at the correct setting.
