Ok so I'm trying to get my WR all setup and right now I'm working on jetting. I've had one guy from my area tell me that when he sets up WR's he likes to use the Air&Leak jet's that come with the AIS kit. Well, my bike already came with the AIS system removed but it's a home fabbed kit, well done I might add. However it does not have those jets, so I'm wondering if it's worth it to run them? I've never used them in any other 4t's and I do plan on getting a JD kit. Honestly I'm not even sure what those jets do and what they would improve. I also understand the only way to get them is to buy the AIS kit from Yamaha?