by the way, I've listened back to it and I see now what you were talking about the timing of things. The part that threw me was that it wasn't actually loop samples (but you had no way of knowing the source as you ain't sat here!). It was a latency issue within Ableton with plugins making a couple of drum modules a bit out (as well as the guitar needing cleaned up), so when those drums were playing at certain bits the timing was noticably slightly off, esp on a snare and hihat combo. I hadn't noticed cos of the effect side chain on it.

I've also taken on board your comments about the kick, and shaved some of the lower frequencies off where it has the bassline in at the same time, and its much more punchy, but still with the sound I'm after.

Thanks again for your keen ears and good advice, you obviously know your stuff! Respect to you.