Frustrating but They’re really not overly complex. Good luck finding a local bike shop that even heard of a Bendix hub let alone one which hasn’t been made since 1964 or ‘65. Only one anywhere near me. YOU CAN FIGURE IT OUT. Do the brakes work? Take it apart again, check the condition and positions of the clutch retarder couplings, Items 11 and 13 in the manual. The clutch/s should still work but not very well if these are really worn, you might have somehow have them on wrong. Seems to me the clutch/s aren’t working. Wish I had it in front of me,at least I could tell you the problem. Only ones I couldn’t fix with a good cleaning and tweaking of the index spring had broken or missing parts.