Seymour SN-9 Aluminum Snath adjust handles?

I enjoy this snath but would like to move the handles so it works better with my short legs. Anyone have thoughts on if/how? The nut is sunk into the wood and the bolt has a smooth head. Thanks

have you a picture ?

Thank you David, I do not. My scythe is in WA on my land where I spend 5 summer months; I am in Berkeley. I found this link http://seymourmidwest.com/uk/21409
 and if you roll over it you can see the handle. And I may be forgetting the design, may not be a nut. I also learned (assuming it is true) that the bolt is reverse threaded, so that may be a solution to my problem (with the exception that if is is very tight I might damage the wood handle to unscrew it).

It's a left handed thread so turn RIGHT to loosen. It'll also be cranked on pretty tight from the factory. The best method to loosen them is in a vise with rubber jaw pads, as they allow you to get a firm grip without crushing or marring the wood. Then use the snath's shaft as a lever to break them free (pushing the collar end DOWN is the correct direction to loosen them in this manner.)

You may find this guide useful.