Triumph 900 Gt Pro

Hi, I’m looking for some help that triumph themselves have failed to give me.

I purchased my 900 GT Pro new from them in 2023 it’s has 3000 miles on the clock and has developed a starting issue along with a starting noise, it’s like a clattering noise. That’s not the only problem, sometimes it really struggles to fire up, they have had the bike back once and run test and told me everything is fine. It definitely isn’t sometimes it takes a good 4 or 5 seconds of turn over to fire up. The battery is strong as well as the starter motor. I think it’s more of an oil pressure problem which would co-inside with the clattering noise, potentially the clutch clattering ? I will attach a video so you can all see. Thanks in advance.