In single mode the cart should be sitting level, in multiple mode it should be tilted downward. Quite frankly you might want to think about picking up a cartridge carrier without that feature, it's more of a PITA than its worth and sometimes causes alignment / azimuth issues.
If your automatic start issue was about the arm moving erratically or not moving all the way across the record it's probably going to be acting up again very soon. Google the word Steuerpimple and read up on it if you're not familiar with it already. That's the German word for the little plastic clutch tip inside that moves the arm across the record. It eventually wears down or rots away but it's an easy fix, usually you can make a new one with something from around the house. All surfaces associated with it must be clean and dry, no grease or oil at all.