30 hp 1995 J30ELEOB was running but hard starting... then was really hard starting after running for awhile. When running it goes well . Just replaced spark plugs with no change. Now it cranks, gets fuel but won't start at all. I'm up on an island inMaine so I don't have all my tools and such. Suspect I'm not getting spark, so coils or power pack? Even with a shot of starting fluid it won't start. I alway thought when a coil or power pack went , they just went ( like now) vs getting it started eventually like before.. am I on the right track?