ls1tafirehawk

Hey guys im having a problem Gettn my trans to go in the last two gears and reverse. I had the tranny rebuilt a few days ago and I dropped it in yesterday. Im steady tryn to bleed my clutch up all the way but it not all the way there yet. I wondering if that's the problem. When I start the car I can't get 1 r 2 but I can get 3 n 4th gears while the car is on but no 5 n 6 r reverse. Any ideas r things I should check on r just simply keep playn with the clutch