So i have 2 questions i was hoping everybody could help me out with. My first question is: i have i 02wr250f, i just bought in the spring, while i check the valves this winter i was thinking about adjusting the cam shaft to yz spec. i know how to do it from the thumper faq web page. but it says that you might have to adjust the jetting on the bike. ive done the gray wire and the bafle. i haven't taken the airbox lid of though, so im wondering were i should start with the jetting, right now it is still stock, and i know not much about jetting. Question 2: were do i mount a flag on my bike. i want to go to the michigan sand dunes next year but i have no idea. i was planning on going but me and my friend never got a chance to go on the same weekend my friends brother, who has a place up there, could go. they both have banshee's and they just put it on the back bar. Question 3: do i have any chance in keeping up with them. when we drag i usually keep up untill he hits 6th gear. i know the bikes not made for the sand and i should have a bigger bore bike for that but i ride mostly trails in pa and his will be a once and twice a year occorence for me to ride the dunes. question 4: is there anything specific i should do to the bike so i dont mess anything up with the sand. Thanks for all your replies in advance