what shaft should be used with pure track putter head model #403?
I think that I found your answer. The 2010 catalog lists a DM Pure Track putter model 403. The catalog lists the TT1004P shaft for the 403RH model and the TT1005P shaft for the 403LH model. The TT1004P shaft is 1/2″ offset double bend and is available in the 2017 catalog. I do not see the TT1005P shaft in the 2017 catalog, but could be done as a custom bend.