My Fender Kingman came with round wound phosphors. I went to put on LaBella gold tape wounds. When I put the pegs in and began to tension the strings, the retention pegs pop out. I have tried sanding the pegs and scoring the pegs for more resistance to slip along with pre-bending the strings at the bridge. I did get them to hold but a new set of strings will have me wrestling with the pegs again. Anyone have this problem? This also happened with a set of steel strings I tried to use.