Re: clicking noise
Yes, there is an adjusting wheel where the cable exits the plastic sheething.
Remove it from the trunnion block and either shorten or lengthen depending which way it shifts.
They usually start to stretch out from normal use but you can shorten it easy enough if thats the case. Use a bit of loctite on the screw when locking the cable back in the trunnion.
On mine theres a plate that covers the cable exit, remove that and you'll see the cable clamp. That bolt for the clamp is usually quite tight.
You can adjust cable length without disconnecting the cable from the shift lever on the engine.
You might want to disconnect both the cables at the engine and see if it shifts hard or stiff. It should be easy to shift with loose cables.