I have a clarinet that I'm going to be using the graphite fiber banding method to repair the upper joint which has got a crack running through the throat A and one through the register tube into the top of the thumb tube.Both cracks are into the bore.Could anyone with experience with this method suggest the amount of bands and placement.I have a couple of wrecks that I will be practicing on.Unless suggested otherwise,I intend to place two above the register tube and one between the C and Bflat trill key.