I have an 04 trx 450r I just bought and had some problems with it at high rpm so I took it to a local shop and this is what we know. I have a 2006 carb on an 2004 but the TPS quick connect don't match up. The one on my bike(04) has 3 wires and the one from the 06 carb has only two wires. I'm wondering why someone would put an 06 carb on an 04 and how do I get these things to match up and work.