Great!....

Oil leak is "full" to "add oil" mark in 500 odd miles.......and now there is a gentle cam speed mid range tap tap tap at anything up to a fast idle with or without serpentine belt on an engine that has only done 500 odd miles!!!

Thoroughly and utterly fed up now.....

simple stuff first ......

could the tap be tappets settling down?

oil loss - have you checked for leaks?

.....a calming voice....

I should have put on that.....it's been back for a "pumped" cam follower and for the leak to be checked...looks like it's coming from the sump gasket......

So i drove it back and as far as going ridiculously well (had a full balance) fantastic but.....oil leak still there and now the tap tap tap......spoken to the company since posting and they have said if i take it back they will strip, diagnose and fix it while i wait.....