SUTHERLIN — An unpaid towing bill led to an investigation and the arrest of a Sutherlin man on suspicion of using a fake name and committing seven other crimes. Shanadoa Wayne Johnson, 35, was picked up by Eugene police on Saturday and transferred to the Douglas County Jail, a day after officers from Sutherlin and Roseburg searched his unoccupied trailer at Hi-Way Haven RV Park on Fort McKay Road in Sutherlin. He was in custody today in lieu of $25,000 bail. Police say they found a firearm and a small amount of methamphetamine in the trailer, as well as a …