Some of you may recall that when I joined this board, I was not particularly impressed with the power output of my stock DRZ400S. Last fall, I installed 14/47 gearing, which made the bike much more suited to the 90% off road riding I do. Still unhappy however, I read numerous threads about the 3x3 mod, and various jetting options. During my winter maintenance program, I decided to install the DJ kit, and use the 140 main, with 25 pilot as recommended by burned and others. Yesterday, I rode the bike for the first time since making these changes. I noticed an improved throttle response, and the engine sounds like it revs quicker. The bike does feel stronger, and will wheelie easier than it did before I made these mods. There were some very greasy (wet clay) and muddy sections in our ride yesterday, and as I'm not an experienced off-road rider, I went down 4 or 5 times. When I went to restart the bike, I noticed it didn't fire up quite as easily as it did when stock. Maybe I need to make a small adjustment. Any suggestions??? I also removed the insert from the exhaust can cap. The stock "tin can sound" is gone, and a real thumper sound has replaced it. A 49 tooth rear sprocket is next on my list of changes, and there will probably be more mods this winter. Gonna spend this season becoming a better rider though, 'cause at 57, picking up this 300# bike can get to be a real chore. My sincere thanks to burned, bronco, and all you folks for this very informative, and entertaining forum.