A Gaylord contractor accused of forging documents and failing to pay a subcontractor has pleaded guilty to felony aggravated forgery. 71-year-old Karl Richard Kuphal entered the plea on Friday. He reportedly admitted to forging 2 bank lien waivers by signing an electricians name, and failing to pay the electrician the more-than $4,000 he was still owed for work on a home in Gaylord in 2009. Kuphal faces the possibility of up to 10 years in prison. His sentencing has been scheduled for April 6th.