2056 type IV in a vw splitscreen Scat c35 cam 36 dells.
Thanks for the help some of you put forward when building my engine last year

All four of the barrels were leaking very slightly where the heads mate to the barrel. (slight discolouration on the metal gaskets where they had leaked). I also had a chirp on turn over and start up, that vanished quickly when the engine warmed up – sounded like air escaping. The barrels and pistons are 96mm from a UK supplier not a branded make as far as I am aware,
Do you guys recommend the metal gasket between the case and barrells are left out (these were used)
I did not lap the barrel faces on 1200 grade wet and dry paper before they were fitted (someone has recommended I should have done this, so I am to try this and check they are flat and true).
If all proves to be ok with the barrels, I can only assume the heads might need machining back.
Any ideas guys.
Colin