Just wandering if anyone has had problems getting their 5325, 5425 or 5525 Deere to start and stay running? Own a Deere 5425 and it will not run after setting for a few days. Have installed check valve in fuel system. The tractor will crank once and start, RPM's fall off/chokes down, and then will not turn back over. Please let me know if this has happened to you. Thanks