Hi, before you go for a major strip down, I suggest you check this : the loading tap should be held in position by a 'tiny' spring & a 'tiny' ball bearing, if the spring has failed or the bearing lost, or some times a groove can be worn into the cover plate, so the bearing will not locate in dimples. not telling you "how to suck egg's" you may be already aware of this. I had a similar problem & if any body knows ? where can I get those tiny springs & bb's ? regards Al