The starwheel will auto adjust after you get it as close as possible. They make a simple brake tool for spring install/removal. It works much better than trying to stretch the spring with a needle nose pliers. Hopefully, you cleaned and lubricated the adjustment mechanism. The old grease can dry up with time and seize partially. This was the case on my Corolla. When you are finished, you may need to bleed the system. Did you need to resurface the drums?