Steering Help on RC10B4.1

[m3nf]

Being new to RC cars i am a little lost on what could be causing this issue.

When i trim the steering on the controller and get the car to hold a straight line at full speed all is ok, but when i slow down the car, it always starts veering to the left. And then when i trim it to slower speed its not stright when at high speed.

Its happened since i had the car from new last week, and wondered if this is normal, and if not what could be causing this.

Any help would be grateful.