first, jack up the rear and adjust the brake shoes themselves, then you may have to adjust the e-brake cable underneath.. sometimes the adjustment is on the e-brake handle....
quivers 3-5 sec at crusing speed goes 2-3 miles does again after engine is warmed up, runs great...
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quivers 3-5 sec at crusing speed goes 2-3 miles does again after engine is warmed up, runs great when load is on engine or idling