Just received a return call from my local S&S engine specialist. He contacted S&S about venting the cam belt cover and he told me they just came out themselves with a new vented cover for our engines.
I ordered one then and there and should receive in in a week or so. Will report asap as to their method. He also mentioned they have a spacer kit as well (cheaper than the vented cover) but I opted for the new cover.
Pic below of the spacer kit , Morgan part SP130133, available from your favourite dealer now.
