Abstract: An advanced fin positioner for operatively mounting a finshield assembly having cantilevered therefrom a plurality of cooling fins and for facilitating selective positioning of the finshield assembly with respect to a bushing tip plate of a glass fiber forming apparatus. The advanced fin positioner including a body member, nut block and compound lead screw. The body member is releasably attached to a mounting bracket connected to a bushing frame of the glass fiber forming apparatus and has slidably attached thereto at least one slide arm including a vertically extending slot. The nut block is operatively attached to the finshield assembly and to the at least one slide arm and constrained for vertical movement by the slot along the body member. The compound lead screw is operatively connected to the body member and the nut block such that by rotating the compound lead screw, the body member and the nut block act against each other causing the nut block and the finshield assembly to move.