Hi. Sorry if this is a repeat but I couldn't find another similar. One of the brass end bolts holding the right hand side to the bellows has snapped on my anglo 30 key Lachenal. The end is a fraction below the lever of the belows so I cannot get at it with pliers. I have tried superglueing the top of the bolt on and unscrewing it but that does not do the trick. If I could somehow cut a small slot in it I could get a fine screwdriver in and extract it that way. Any ideas?