I need advise to adjust the draw lenght on a 1999 Martin Prowler w/z-cams.

My brother gave me this bow and is in very good condition (new). The problem is that I am looking for the x-modules to adjust the draw lenght from 29" to 27". This bow has 2ea z-cams, so I will need two x-modules to adjust the length. Can somebody from martin Archery or anybody advise if I can still find the X- modules? or Can I replace the cams using Dyna cams? Does Martin still stores parts for this year and model?