The Aquacraft mini wildcat is my first foray into power boating. I've only run it once. The manual says to grease the drive lines after every day of use, so I started to do that. It says to loosen the set screws and slip the drive lines out the back of the boat.

My problem: I've loosened the set screws, heck I've even taken them out, but the drive lines will only slide out about 1/4 inch. The coupler moves toward the stern as I pull on the drive line and stops at the drive line casing, but the drive line won't slide out of the coupler. I'm hesitant to force it in case I break something. The manual shows that the drive line comes out at least an inch if not more and implies that the drive line comes out entirely.

Can anyone advise on the correct procedure? Or on what's going wrong?

TIA

David