Just a couple of small issues that maybe some of you Yamaha pros have a quick answer to. First off I just got back into snomachines last year after a ten year brake. I've heard that Yamaha's can be a little picky when it comes to their air, being that my 97 700SX has few years on her, the foam under the speedo/tach is breaking down along with the pre filter cover over the air box and I don't want the little pieces being sucked in to the carbs/motor. What is a good replacement for that other than OEM?, or should I just yard it off and run without it? Another issue is the temp light flashes on occasion, not the three times that I have read about being the temp sensor, but just likes to flash me once and awhile. Heat exchangers are warm, head is warm, not hot..; weird. I pulled it in the shop last night and what listening to it gurgle like there was air is the system. Pulled the seat, lifted the back up and the coolant was to the top of the bolt hole, no air. Did the same to the front bleed screw on the head, same thing.. coolant, no air but still gurgling?? And last for now, how big of a lug track can I put under this beast? I see Yamaha had put a track with little nubbins, a little better than a half inch with studs. Is that OEM? Would like to loose the studs. Thanks in advance!