So my 72 Kawasaki f7 ate a piston this spring. I'm finally getting around to putting it back together. I went to assemble the case halves and I couldn't get it to switch any higher than neutral (will go into first) so I took it apart before the gasket sealant cured. Does anyone have any tips or anything to check? Only the outer 2 gears were 'free' to come off when the case is apart so I know nothing is installed backwards internally. I know I didn't provide much info but I've never really messed with motorcycle transmissions before. Thanks!