v6 4mo possible misfire?

[dmac60]

Recently bought a v6 4 motion and really enjoying it apart from what seems to be a sort of mis-fire. It can skip at high revs and after standing for a few days this week it ran pretty lumpy for a wee while but seemed to clear up. It's doesn's seem too bad, more annoying than anything else. Any ideas anyone? Coil pack? Maf sensor?
If anyone could help me out I'd appreciate it!

[Granta Gti]

first thing to do would be to scan it and see if any codes have come up..

[bricey]

r32 and 4mo can suffer from cracked coil springs/ingnition lead housing,pull them all out and have a look
most likely going to be this