thx for the compliments Dieter
anyway, been busy again !
i wasnt too happy about some of the machined surfaces once i removed the protective film off the parts, so i had a shot at straightening the edges of the plenum chamber - this time using a g u i d e (hey, live & learn) and a lot of cooling water. got messy needless to say, but was well worth it
also cleaned up the outlet holes (again using water to lubricate the tool) and i think they look rather cool now.