I purchased the boat a week ago tested it on the river everything seemed fine. Took the boat out this morning motor turned over right away but idled for a 30 seconds to a min jumping between 500-900 rpms, sputtering at times then died and could not get it restarted. After a couple attemps and making sure all the basic were covered with no luck just turning over but not catching. I called the selller of the boat said he never had any problems of the sort. He recently had run the boat on land everything was fine. The last time he got gas was Dec. Which there was a 1/4 tank, he filled it up and also added stabill followed all manufacture specs for proper mixing.