Recent news affecting co-op / condo buyers, sellers, boards and residents. New York City Controller John Liu wants to hear from co-ops, condos and others who suspect the Department of Finance overvalued your building for tax purposes. Plus, a Queens co-op is putting up signs to try to prevent people parking legally on a public street, the Attorney General gives developers an extra six months to digitize their offering plans, and a co-op board goes after a widow and widower. And speaking of boards, a lawyer tells how to collect arrears by cutting off amenities.