Rub Rail not smooth!

Does anyone know why my rub rail is behaving like this? I've tried everything from sweep to loft between two profiles with the project curve serving as guide curve... but no matter what I do it just doesn't get smooth! I'm suspecting it might be because of some sharp angle between the profile and the path (curve) at the bow area, but the trouble is; the shape of the original (Hydrolift C33 Cab) is exactly like that. So, is there a workaround?

2 Answers

Try changing the Image Quality Slider:

To use the 2 profiles, you must make a loft, not a sweep