The present invention provides a removable and adjustable neck joint between a neck and a body of a musical instrument. The chamber includes a convection drying first stage, and conductive drying final curing stage an intermediate stage ; the stage is subdivided into a plurality of preferably contiguous drying zones. Specifically, the radial thermal expansion of the downstream end of the plug is closely matched to that of the retainer component which receives the downstream end of the plug. The failover table indicates an order that the one or more other controllers will replace the controller as the primary controller in the event that the controller enters a failure mode. The leveraging member is hand manipulated to exert force against the second adjacent concrete form forcing the form inward into the concrete wall.