4 Speed- Hard to get out of reverse

I just put a 4 speed back in my 73 Duster. It has a hard time getting out of reverse some times. Before I spin my wheels, should I start by adjusting my linkage or do I have an internal issue. All gears work great just have a hard time getting it out of reverse. Thanks for any input. Working on it in the morning.

Thanks,
Bywatermopars