Found this MX80 to teach nephew and wife to ride on. Needed brakes. Put on new shoes and got new cable for front brake. Thought it was weird it didn’t have a barrel adjuster(same as old one). With that in mind, when installing I can only try to do my best with the teeth in the spline and arm on the wheel. I either get engaged with no lever or free spinning with only about 30% brake with full pull. What’s the trick to this?