I glued the balast down on one of my point, well the wife glued down the balast on my point by mistake. whilst the glue was drying i kept opening and closing the point and this seem to do the trick. i am going to try this again and see if it works. i think that the fact i use 50% PVA & 50% water with a drop of washing up liquid helped. if you plan to try this i would try it on a old point to see if it works for you.