i have a 98 yz450f that was popping out of 4th gear i replaced 3rd and 4th gear and both shift forks, crank etc while case was split. i have a manual and assembled as noted. after the case is back together i can only get 1st gear but it will not shift up into 2nd feels like nothing is there. should i be able to shift it through the gears??? i know on my honda 's i can shift them when just the lower end is together. i have taken it apart 3-4 times doubled check all gears and forks, what am i doing wrong:bonk: . i dont want to put it all back together installed in the bike to find it wont shift.