Here's some helpful links that are related to Tribal.
(taken from warped airsmithing)
Air Soldier Products. A very nice website with lots of upgrades and helpful information.
Fear Factory Paintball. This guy can do anything when it comes to Tribals and any other marker out there.
PBNation.com. This site seems to be where the majority of Tribal owners hang out. There are lots of people with lots of helpful information just waiting to answer all of your questions.
Warped has top notch work and if I am too busy or cant do it for some reason I would recommend him over everyone else, but hey he cant do it all, that's why I'm here :)