Transmission / shifter ??

What am I looking at? The problem seems to be second gear. But it shutters in first when I start out. I can shift into second gear from first gear, but when I down shift to second, it either shutters a lot or grinds and wont allow it to engage.

Shutters: Broken trans mount, bad clutch, bent clutch arm...

Bad boden tube

Could be a number of things. I had simialr problem with my old 912, was leaky flywheel seal. Soaked the clutch disc in oil which showed up as shudders.

Right, engine and transaxle mounts that are cracked cause the engine to shutter. A fryed flywheel will also do the same as well as the other things pointed out by other members and myself

Yes sounds like oil fouled clutch. If oil gets on there and burns a bit, will act just like this. Or any of the other things mentioned also possible. If you have done the easy stuff: checked to be sure the clutch cable is not about to go, and is adjusted properly, then whatever it is, you will have to take a look: drop the engine and see what's what. Fortunately, not a hard job if you have a floor jack. When I was having clutch trouble years ago, got so I could do it, alone, in about ten mins.