The Parker name for the part is "bolt plate" . Operation with the lever left of center is fine, but the bolt plate needs to be replaced when the lever is full left and there is up and down looseness of the barrels on the action. If the play is fore and aft, the wear is in the guide roll or the barrel lug front end. The guide pin can be pressed out and a new guide installed on the roll ( hinge pin), although the more common fix today is to add material and recontour the lug front hook semi-circle.
Looseness can be minor or excessive, and many of us are not bothered by a small amount of looseness if the barrels are tight against the face when the forend is on.
Call Galazan for a new bolt plate, although it will have to be stoned and/or filed to fit.
|