My KR2 only has a nifty aluminum fuel cap, which is formed of two parts: a round cap, and a streamlined aluminium rod acting as a grip. There is a tiny hole on the rod (2mm) facing back, and linked to another, vertical hole in the cap itself. And that's it. Has been working for almost 400 hours like that.
Serge Vidal KR2 ZS-WEC Tunis, Tunisia
