I have this old ob and i need the prop and drive shaft gears.I dont know the make , the information on a small tag on it says "The ESKA company Inc. D'Buque Iowa. there are two numbers<br />63407A and 4420247. the little 1.5 or 3.0 HP works but the bottom gears are broken. If you can tell me what it is and where i might find the gears. thanks.