You want to make sure that all contact points for the shoes are clean and greased with white lithium.
A possible problem is that the shoes "rock" in place when you apply the brakes. This rocking can simulate the e-brake action and cause them to over adjust and bind.
The system is designed to adjust the shoes when you use the e-brake. So I assemble the shoes with drum and then use the bellcrank like a ratchet and repeatedly move it until the clicking inside the drum stops.
A possible problem is that the shoes "rock" in place when you apply the brakes. This rocking can simulate the e-brake action and cause them to over adjust and bind.
The system is designed to adjust the shoes when you use the e-brake. So I assemble the shoes with drum and then use the bellcrank like a ratchet and repeatedly move it until the clicking inside the drum stops.