[Rick]

Boring process so wont labour over it.
I did however leave my ports to soak in gunk engine degreaser for over a week before even taking a brush to them, once i did they were a ten minute scrub per port to get the results you see here.
Invest in an injector cleaning kit as it has loads of drill brush attachments. 20 quid ish from amazon or ebay and it really does make it sqeeuzy peezy lemons.