You really should grease the u-joints every oil change and the slip shafts every other. Do you do your own oil changes? I'm not knocking you if you don't, just be aware that you should crawl under it every oil change and do some level of inspection.
A the min you should check your nuts, grease your shaft, lube your balls. (my teen age son gets all red in the face when we go over Cruiser maintenance... LOL.)
A the min you should check your nuts, grease your shaft, lube your balls. (my teen age son gets all red in the face when we go over Cruiser maintenance... LOL.)