I have purchased a 25+ year old tamiya sherman I believe it is 56005. It has clutched drives ( steer by declutching one side or the other. I replaced all the bogies and other suspension parts with new and test drove it. marked improvement in operation but within a few moments one of the track link pins came off( original metal ) I cannot find a manual for the old tank( not even sure if the kit was rc to start or was converted) and as such do not know how to prevent the tiny little track pins frompulling out. Is anyone familiar with the old sherman metal tracks? are the pin holders crimped? I have thought about a dabba glue on the end of each link pin. but really I would like to do it right . any tips?