After changing my fluid in my ax-5, it seems to be quite difficult to shift into 2nd and 4th gear. When I get into gear it will pop out and I have to hold the shifter for a few. Before I changed the fluid, it would grind getting it into 2nd only but would stay. All other gears were a breeze. Today backing up into my garage reverse popped out. 1st, 3rd, & 5th have no issues. Any ideas?