This year I've have had to lubricate my shifter linkage, because the trans. level would not go from reverse to forward properly. You have to figure out where it is sticking or binding.
I thoroughly lub'd both ends, but found out that mine was sticking at the shifter linkage,
just inside the shifter itself. The cable can bind where it links up with the shifter plate & the pinion. After several liberal squirts with PB Blaster it freed up & operated fine.
Now I don't trust it so much, so I always check the trans. & throttle linkage for proper movement, while tied up in the slip, & run from forward to neutral to reverse & back again BEFORE we untie from the pilings. Finding out that our C 30 wouldn't come out of reverse & into forward under power in our TIGHT fairway would be disastrous. Especially with our lil' 5411 we need every bit of oomph we can get out of her while coming out of the slip.
ps. If you use PB Blaster be careful with it & don't spray anything plastic or rubber, as its rather corrosive in nature to anything plastic & also avoid spraying onto the nearby wiring harness of the engine gauges. Its all pretty close together in the port locker wall. Good luck.