Well just got my manual conversion done on my roadrunner. So stoked!!!!!!!! So i took it for a ride,everything works excellent besides ....I cannot get it to downshift into 2nd gear!!! It just grinds. I can shift into 2nd gear no problem. All other gears work perfect. I am a little low on fluid. I put 3 quarts of 80-90 gl5 in it just to try it out. Theres no way this could be a fluid or adjustment problem correct?

When i had the side cover off for inspection, none of the gears looked chipped and everything looked ok, but im no expert,i really didnt know exactly what to look for in these...