Long time reader, first time poster...What i have is a 03 trx400er, just torn down to check 2nd gear. All looks fine. What happens is on the jack it will go through all the gears spinning the rear wheels. Put the bike on the ground for a test ride and it will go just fine in all the gears BUT 2nd. It acts like its not all the way in gear.You can hear a grinding noise and will barley move the bike foward. Put a new clutch in it while it was apart. Forks all appear to straight and while on the bench the gears are throwing in all the way. This was the problem i had before tearing it down. Thanks in advance for any info.