They were supposed to be straight. It is easy enough to run the front axle into something (stumps are a [censored]).
If you paid for a good one, take it back.
A small amount will be corrected for with toe in, but you have to be really sure it doesn't have a twist.
To check, put a straight, tight fitting rod at least 3 feet long in each of the kingpin hole. Make sure they are absolutely parallel.
