I wanted to say thank you for your prompt testing of the samples I recently sent in. I actually pulled the samples for a friend that is contemplating buying a boat and this helped him make an informed decision. You noted the difference between the two engines. Well you hit the nail on the head as this engine had been taken apart for inspection. It was determined that is was in good shape and reassembled and they decided not to open the other engine. I as well as my buddy and the seller are all impressed with your abilities. I will continue to advocate for your services. Best Regards.