I am working on Sterling silver replcement parts, designing new clips and center bands etc. I would need the dimensions of the parts you are looking to replace. I have just started working on parts for the sierra style. I have a start on the slim line and cigar styles. Im working on F/p designs now using Heritage nibs and feeds. I have some 40 pieces ready to go to casting. If you have a design you wish to explore send me a drawing with dimensions. Most of the clips Im designing will be able to be attached to the different tube sizes either throug attachment to the cap itself or to a silver washer made to fit the cap size and tube size. KInd of ala cart. Im tying to get them in production as soon as poosible. Attaches pictures are of the masters used to make the molds you can get an idea of whats coming . Mike