Probably shouldn't tell on myself like this, but. I just purchased a set of webcams 288/293 from ebay. When I got them today they didn't look right so I started measuring and looking at my stock cams. They are stock cams with the decompressor removed from the exhaust cam! Been trying to find oshc's. Then I search "search tempest" which looks at craigslist all over the US and Canada and Mexico. I found several ohsc's. I weeded them all down to one. This guy said he was absolutely sure they were oshc's. He answered all the questions right. I get them here and they are nshc's but basically brand new. They still have the coatings on the lobes. And for $100 shipped I guess not bad. Sorry for the rant. I guess the moral would be even if you do your homework, do the search, and do the research to find what you want someone, somewhere, sometime is bound and determined to step on your uh um finger! Know what I mean?