To get the proper angle of attack you will need to slot the front boom tube hole downward. I use a round file to do this. Take your time because these files are usually very coarse and they can make a mess before you know it. Go a little at a time until you reach the proper setup. Be very critical of yourself and make sure the tub is level each time you take a measurement. Try and get the groove level so there will be no need to shim due to uneveness. This step is VERY important and should have special attention.
