99gtmustang

Alright now i am pretty new at this. If i posted in wrong forum just let me know. Well here is my problem i just got my tko 500 installed. already broke in the 500 miles they recomend. Its hard to shift into a gear when its on neutral. Also when i get it in first and try to shift to second it kinda stops on neutal then its hard to go into second. Please help is this normal or will it go away within time.

2000GT4.6

my TKO did not do anything like this. I would call tremec and talk to them about it.