My girs '99 Civic EX sedan has 72,000on it at 65 we replaced the manual tranny fluid with Redline MTL, it shifted GREAT after that and less grining geting into Reverse!! But now the shifter itself has gotten progresively stiffer. harder to push throgh the gates. I have used spray white lithium grease on teh linkages under the car. Is there a joint under teh shifetr boot I need to lube as well to get the shifter smooth again?