Foolish me for underestimating NP's aptitude for pedantry. When is it or when is it not LCF? Are we going to have a discussion about musical theory next? When does a rhythm constitute music and when does it not... 250 odd Revs per mile? At 90 Mph a mile is what, 45 seconds? 504 cycles on the combi lever, for every mile that the valve went from free to stuck? How many miles do we reckon that took? 10? 20? 5? It takes at least a mile to stop and my understanding is the brakes didn't go on until the Cross head made a bid for freedom after being let down and smacked in the face by one broken/free Combi lever/Union Link. So we have a value bounded anywhere from 500 - 5000+ cycles on the combi lever. Do please explain to me how that would not constitute fatigue?