just as a tip, i figured this out today.. was workin under the tank a little, when you have the tank ****ed back a litttle too far with bungies (not tight, but with a little tension) there is a pin under your seat. Its located right where you slide the front of your seat under the lip. This pin will start to bend if too much pressure is applied! i learned this after 30 min of trying to figure out why my seat wouldnt lock anymore.. ripped the tool kit out, scratched my head and swore a little, then saw the bent pin. It seems like its there for the tank to specifically rest on, but when you use bungies (as i said not even under pressure) it will start to bend down, making the seat hard to slide all the way forward thus not allowing it to lock in :thumbup: