[jambo]

I re-shimmed my SV when I got it, clocks said 25,000 miles, but the engine is not orginal so there's no real way to know how many miles were on that. From memory I think 3 clearances were out.

Every SV I know with any extended milage has needed re-shimming at some point. The clearances seem not to move as fast as they do on some other bikes (hence checks are only every 15,000 miles or so, VS 8,000 for my ZX6R) but they do move.

Bottom line is they need checking as per the manual, sometimes you get lucky and everything's in tollerence, sometimes not. But the consequences of an overly tight clerarance on an exhaust valve are not minor.

Jambo