Hi,
just wondering, does your car have the whiteline ALK?
I know someone who had the whiteline fitted, he said it became 'grabby' at times and needed lubricating to eliminate what you're describing. I think he used silicone spray on it. A while later he fitted the better designed superpro ALK and no more grabbiness - something to do with a metal collar - and why I went for the superpro kit.
Either way, hope you get it sorted.
No, completely standard, as far as I'm aware. Bought the car at the start of April and the only thing I've changed suspension wise is a set of H&R springs.