The rod screws are stuck inside the rollers and I can't remove them. Trying to unscrew them is impossible despite soaking each of the keys in penetrating fluid, or using a hot soldering iron on the tip of the rod screw, or using a shim to stop the screws rotation and ease the roller.
The only solution I can come up with would be to saw through the roller, and its screw, in half using a jewellers saw and attempt (not sure how I'd do this bit) to remove enough of the roller to use grips to remove/unthread one part of the rod screw, and then the other.
Finally I'd need to find new rollers and rod screws to make good the alto. Any suggestions or alternatives?
The only solution I can come up with would be to saw through the roller, and its screw, in half using a jewellers saw and attempt (not sure how I'd do this bit) to remove enough of the roller to use grips to remove/unthread one part of the rod screw, and then the other.
Finally I'd need to find new rollers and rod screws to make good the alto. Any suggestions or alternatives?