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As a preventative maintenance measure, while doing other work I took the camchain tensioner out of my 20k mile Integra. There have been a handful of reports of failed tensioners (exact failure mode not known), so an inspection was warranted. As far as I'm concerned this looks exactly as I would hope at this mileage, essentially no wear evident, just bedding where the chain runs. All the other parts, the links and springs etc, were as new. In usual Honda fashion, the designer who put one of the tensioner fixing bolts (with copper sealing washers) directly beneath the thermostat cover

The main difference is that the NC uses independent rockers for each valve, whereas the BMW uses a forked rocker with two valves working off one rocker, which to make things worse is heavily offset so the feelers will tilt the rocker. Doing the NC valves one at a time is fine, no need to do them as pairs.

Someone posted that I think Wurth do these feelers individually in 0.17 and 0.28mm. For all practical purposes you could use 0.007" and 0.011" in imperial. but again the feelers I have are .006/8" and .010/12" so would use the same principle. If I come across them I'll get some, but meantime the go/no-go principle works.