M900 starter solenoid

Hi guys, new to the forum and to Ducati’s. I have a 98 900 monster that I bought as a project. I’ve changed the belts and tried firing it up with a new battery but I’m having starting issues with either nothing happening when I push the starter or the starter sticking on. Pretty certain it’s the starter solenoid as the switch tests ok. Where is the best place to buy a new solenoid?