Thought I should report back. I took the outer wall off the Breville ESPC8 2 cup filter myself (not half as neat as Greg!). I worked out that the best grind (for me) is with the Sunbeam bcg450 wound to the third notch from finest. Any finer just 'clogs' things in the ESPC8. I also bought a tamper to replace the plastic thing that came with the ESPC8. Oh and I'm using my own roasted blend (close to the KJM blend), roasted on a home-made KKTO-like roaster.
I think the coffee improved, but I was not satisfied. So I bought a second ESP8C for less than $10 of an auction site you'd be familiar with (now I have a couple of extra filters and second filter holder). Then I cut the bottom out of one filter holders (ie now have a naked prota-filter - so I can see what's coming out and when). Put it all together and this morning I had my first 'real coffee' from the ESP8c!!
I now think I can probably change my username from 'starter' to 'started'.
If I can repeat and become consistent with the technique (and also learn to use a single wall single-cup filter?) I'll then try to go back to the un-modified filter holder with my improved 'technique'. Then after that I'll start thinking about some up-grades (better grinder and better machine).
PS When I was brewing I had a few squirts around the edges of the filter (either due to poor tamping, or due to my poor workmanship in removing the outerwall on the filter - there's still a bit of the outer layer covering/partly covering a few holes), but on the whole if formed quite nicely into a single 'pour'/'shot' or whatever the term is.