Hi John i use a normal dubro balancer but not in its plastic base as the props are to big. I have a slatted table with one slat removed and the balancer each side of the missing slat. I drill holes for the balancer rods to slide in. The prop can then swing through 360 degrees. When i have to ajust a blade i do not take off material. I use matt spray varnish and give the light blade a coat on the tip about 2-3 inches it dries pretty quick and do other things while the prop is turning or waiting for the tip to dry. Sometimes it takes a few coats, being matt shows up which end you are working on and if you overdo just wipe it off with thinners and have another go.