 After production began, the engine was changed to a 75 hp (56 kW) Lycoming GO-145-C2 horizontally-opposed four-cylinder engine and was re-designated the Model B-75-L.In 1941 the company moved from Akron to Kansas and the company was renamed the Funk Aircraft Company.Production was stopped during the Second World War and one aircraft was impressed into service in 1942 with the United States Army Air Corps as the UC-92.