I have a bone stock low hour 225efi promax, Serial #OG502776 with less than 450hrs. Well I deleted the oil injection. It’s sits on a ‘97 20xd. What plugs should I run? I am running NGK BU8H currently. A buddy told me it may be too hot or not hot enough, the boat doesn’t want to power up loading it onto the trailer. Any help would be appreciated.