Cougar KC - Steering turnbuckle length

[Darlophil]

Morning all,

Still being fairly new to RC I'm regularly coming across parts of the car that confuse me and on this occasion its the length of the steering turnbuckles.

As per the manual, I've set both left & right turnbuckle lengths to 41.00mm. However on testing, the car veers to the left and I'm having to set the steering trim on the handset to R8 bias just to make it go straight.

Is this normal or do you think I've made an error somewhere else in the build such as the servo horn installation maybe?

Would it just be a case of shortening / lengthening one of the turnbuckles or just staying with the R8 steering trim?

Thanks

Phil