i'm new also, jb5050 is the name i am using here, been jb almost all my life, hope someone can help me figure out how to and where to get a square drive 3/4in. for a sicklebar mower i bought last year, and as of yet have not used it. i am currently trying to hook up a rotary finish mower that is made by big ox? it is 4ft. i can turn shaft by hand, hard to mind you but doable. Any help on the gear box that sits on top. I have some gear oil I presume i should check level, thank you, jb