Ducati Monster Struggles

• 2003 Ducati Monster 620
• Has been sitting for a few months and won’t start
• Battery is good
• Flushed tank and added new gas and Seafoam. No dice.
• Starts (for a few seconds) with ether
• Pulled injectors and can see fuel spray, though unsure about fuel pressure.
• Suspecting a fuel system issue
• Tried “metering” the starting fluid this morning while cranking the engine, and it seemed to be able to start longer than before. Perhaps more of this will help.