So here's the whole story. I blew the powerhead in march of '19, had a new head put on and at their recommendation had the air injectors rebuilt, new water impeller, lower unit gear oil and new plugs. Put the boat in the water and about the 2nd hr into the break in period it dropped number six cylinder. Sent that powerhead back in they said it was a fuel issue. Sent in the fuel injectors and a couple of them showed faulty on the print out. They rebuilt them and said all was good. ( I wish I would have had that done the first time ) they sold me another powerhead at a very reduced rate. Put it on and have been fishing it for the last year with zero problems.