Hello everyone. Am the proud owner of 2 new-to-me Swans - both BHR SF 200C Fine models. One has a round top cap, the other a flat top cap. The shape of the sections is different, as are the nibs. One is in perfect working condition, but the other's lever is not attached to the barrel in any way. It is attached to the pressure bar. How does the lever stay in place usually? Am I missing a part? A ring perhaps, or a pin? Many thanks, Nick Also, this nib is very different than my other one. Marked 2 K, it looks like it should be flexible, with long thin tines. But it is not. Surprisingly firm, in fact. The other one is a full flex thing of beauty.