Kiwipom, I think we're about there - now that most bits are primed. I agree - with all new bits there should be no problems with decent pressure. Initially until things did start moving, I wasn't concerned there was a serious leak because the tank level wasn't really going down.
Remember this a brand new build and although I used a squirt of oil on moving parts as I assembled - I didn't really anticipate the priming required for circulation (my first BSA build and still very much learning). New, dry; oil tank, pipes, pump, PRV, end feed, crank journals, oilways, sump; guess it's a dawdle to to replace any one part and re-prime it in a few kicks - however - for me it looks like it's a lot easier to push oil round the system than air - so took a lot of kicking. The places I have been able to see oil move - it does look like a good flow now. Just need to get my seals sorted on on the end feed and we'll be able to run it up and watch the return to tank.
Like I said in an earlier post - I think I started the thread about 3 kicks too early - if I'd just had a fag and a breather - then kicked for about 10 more seconds - we'd have had oil and no thread.
Thanks Raymond.