Reed valve breather fits all

Lab pointed out that there was not room on 850 MK3s with the original prestolite starter. So I started making angled threaded fittings for the Mk3s with original starter to replace the original tube breather - plenty of room now. See one way reed valve breather below (with BMW stainless reed). The same basic breather fits all other versions of Commando (& Atlas).
Photo supplied by customer (thanks Mark).