The casement window is 1 foot 6 inches by 4 foot 6 inches. It was installed in June 1996 in upstate N Y (Albany area). There's a 3/16 inch bolt set screw arrangement that locks the crank handle to the gear shaft. The threads inside the crank handle are strippred. Stamped inside the gear box assembly is; "Truth", "Pat. # 4840075" "Made in USA". Can you tell me the replacement part?
Thanks,
Rich