Picked up a roundbutt j frame and absolutely hate the rubber grips on it, so I bought a beautiful pair of Altamont's bonded ivory classic panels to replace them. To my dismay, when I took the motorcycle grip off , I saw that the , what do you call it, grip retaining pin? had been removed. Smith is sending me a replacement pin- free of charge, very nice of them- but I'm wanting to know if there is a trick to putting it in... anything anyone can tell me to facilitate installation?