1975 MKIII, so left side shift, haven't riden the bike yet. My question is that when I shift the lever I can only find 1st, neutral and 2nd gear. Moving the lever up past 2nd doesn't "click" into 3rd or 4th. Do I have a problem? Trying to get things sorted out before I take it for a spin in the next couple weeks (once the other bits are done). Any help is greatly appreciated!