I glued up some maple boards..all were 3 inches thick but needless to say when you glue them up you have high and low spots on the front and back which I got them all level..front and back..but my trouble is when I do a pulling cut to try and shape the platter..I cant get one continuous sweep to level it out and start forming the platter...I even used carbide tools thinking my bowl gouges might be sharpened incorrectly..still getting the high and low as I start sweeping....the platter is 14 inches by 3....if anyone can help I really would appreciate it...