I have had my 95 Pathfinder LE 4x4 100,526 miles for about a month now, 4x4'n on the beach! My question is- I know they are characteristically sluggish, but, mine seems a little odd. It accelerates in steps under normal acceleration in 2k-3krpm range. I can feel it, and I can actually see the the tach move kinda like a poorly made wristwatch. Do they all do that? Any suggestions would be welcomed. Thanks!