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> The exhausts always go first because the hot gasses flow out around them. I think it's also due to the reduced lubrication on the exhaust valve guides due to the temp and maybe pressure differences that results in more wear on them, so the exhaust valves are more affected by the off-centre pounding. Dave. UK VW Type 3 & 4 Club http://www.hallvw.clara.co.uk/ ------ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~