I'm an old guy that has been riding bikes for over 50 yrs. I've owned at least that many bikes and have raced and wrenched on my own for years. First, I've read some posts about TK carbs. I just bought an '08 with 94 miles. My first concern was the carb being plugged up. The seller said it was drained prior to storing. It started right up but was storming bad so I didn't ride it. It would idle with the enrichener all the way off so I figured it was OK. Got it home and it wouldn't take the throttle at all. So this morning I pulled the base off and it really looked clean. I removed the pilot jet which is plugged (at least I can't see much light threw it). I think it's a #31, my 70 year old eyes aren't that great, can someone verify that size. I usually go one size larger on the pilot in my dirt bikes. Also I read that the idle air screw is usually around 1 3/4 turns and needs to be 2 1/4. Mine was only about 1/2 turn (the plug was still intact). I'm only going to use this for a pit bike but I need it to run good, especially if the DW want to ride it. Thanks in advance for you help.