Has anyone tried glass bedding the action on a springer? I’m seeing a slight but steady upward movement in POI with extended shooting with one of my aftermarket stocked FT springers. Scope and mount are solid and screws are tight, but every time I recheck my 30yd at the end of a shooting session, POI is 1/2” higher than it was at the start. I’m thinking maybe some movement within the stock? Uj