Martin Cougar III Magnum with nitrous cams.

Here's the kicker; They cam module does not have A, B, or C on it. Instead it has HL.

The cam module also has two screws, on opposite sides, to hold it in place.

The bow says it has a 58 1/2 string and 38 inch cable with a let off of HL. However I purchased a 58 1/2 inch string to replace mine and it was way too long.

Help!