so what are the main issues with cam gears...i mean, as long as diameter and tooth count are equal (and tooth profile) all should work, correct? i've got a couple that i could measure laying aroung, but would anyone have the dimensions for a round tooth cam gear i want to compare it to something like this :http://cgi.ebay.com/ebaymotors/92-93...Q5fAccessories or am i just way off base