We had some recent thievery at our river camp. Noticed somene had unscrewed the end piece to my Merc throttle handle/tiller. I put it back on but it was very hard to shift on my next outing. In fact believe I had to start it in a non start position and shift it in a none shift position. Which leads me to believe I put the handle back together incorrectly. Is there a certain way that end piece goes back on? Is it supposed to be turned down tightly or does that also control the ease of shifting? Thanks for any help.