Looked at my steering box once with every intention to work on the adjustement screw. I noticed for the first time that the allen bolt was more than a 1/2 inch above the top of the locking nut. I recall a post noting that the hex screw could be adjusted up to 16mm above the top of the locking nut. With this info, I am certain that I have previously adjusted this box as far counterclockwise and as far tight as it would go.

Is anyone aware of this screw length signifying maximum adjustment? I would assume that a "new" steering box could be adjusted to the point of locking up the box and then the screw being "backed off" to regain motion. Is this correct?

This box is under warranty. I think that I will have it replaced, but I'd like get others' opinions.