When I was rebuilding VW Type IIIs back in an earlier life, plugs always had to be properly gapped, and that's why we always had feeler gauges. When I learn to service the valves on my JH600 I'll need a set of feelers. Any thoughts on where to get these?

As for the NGK plugs, I hate the little cardboard boxes that all plugs seem to come in -- even with the protective tube around the gap end -- since the box is always crushed amidst all your other stuff, and the tube falls off, and, yes, you start worrying about the gap. The spare plug on my California KLR is always tucked safely away in a purpose-built plastic holder, but I've never seen these here in China. I'm guessing they can probably be had up in Jiaoji Lu scooterville, but I've never remembered to look.

good question about JH600 tires, as I'm about due for a new set. I do see suppliers in Taobao, but have no idea who's reliable. ChinaV, I thought you'd volunteered to help us source some decent rubber there in GZ/HK?