I got a used one of these on ebay. Overall it seems in good
shape but I noticed when when going to the 5th speed it doesnt
"lock" into place like the other positions do. I just have to
keep twisting until it doesn't go any further. Not only that
but sometimes it never quite gets into 5th speed and I have to
back off then then twist it with a bit of extra force to get
it to switch over.

Does this sound normal for these units and if not is there any
way to adjust the action. It's not a huge deal I'm just curious.

Jesse