I assume the Tracer has a Dynacam on it. In any case look on the left side of the cam and you should find two countersunk allen head screws. These hold the module in place. On the right side of the cam you should find a module with a letter "F" and a number. Probably F5.
You should be able to go to a Martin dealer in your area and get and F7 module. It's a simple task to just remove the set screws, remove the F5 mod and put the F7 in it's place. And easy job.
If you don't have a Martin dealer near you then you can order the mod from Martin.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver