RE: Mathews draw lengths?
Depending on the draw length, SBs run between 1/2 to 3/4" more than what is posted on the cams. This is about average among manufacturers. The best I've seen is Merlin and the new Hoyts. The worst I've seen will remain unnamed but did run 2 1/2" longer than specified.
This DL problem is why I designed a new tool for Dealers around the country. DL measurements is just one of many tests/checks/functions the tool allows to be performed.