Finish Swivel and Driver

[smooth]

Hi there,

If i execute a nice finish swivel on my iron shots i hit them long and straight, if i try the same finish swivel with my driver it's snap hook city.

Is this a 'feel' thing i.e. should i be feeling less of a swivel as the clubs get longer or is it likely to be some other problem? without a finish swivel i'm hitting the woods straight although i get a bit of a left arm chicken wing now and then.

Thanks