Main body is an A....and im sure its D barrels E head.....anyways it was easy to do a decoke..never stripped it down below that....Guy that used to do mine and tune was a Brian Dunn from East Ham....i still have the frame....Harris Magnum....ta for the info about R Smith.

Pity you cant get that castrol R anymore....was out on mybike and stuck behind a new car...and the stink....boiled eggs....and they call that clean...Bring back the R.