What is the part number for the lens assembly of a TDP-S25? All I really need is a very small component of the lens assembly - a plastic "bushing/spacer" held in place by a set screw. The purpose of the "bushing/spacer" is to maintain spatial integrity between the inner and outer "tubes" of the lens assembly in order to focus the lens. My guess is that you can't buy the bushing/spacer (cheap) but could buy the entire assembly (expensive). However, Toshiba can't find the part # for me.