It turns out that the violent engine vibration on my 33 mark 2 was due to a bent propeller shaft and old, worn Gori folding prop both of which I have changed. Everything runs smoothly now and the problem is completely eliminated. Thanks for all the advice and recommendations, especially from Brian Cann.
As this is a new boat to me, the damage was obviously done by the previous owner and should have been revealed to me before purchase from the Broker. The surveyor didn't pick it up either, although it's not easy to see unless you have the appropriate expertise and equipment. However the previous owner must have surely known about it. So who's responsible? Looking forward to problem free summer. Robin _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!