Very common issue is the windshield rubber (its actually a soft flexible PVC plastic) detaching from the nose fairing. Mine did earlier this year. I removed the nosecone, cleaned everything up and reinstalled the "rubber" using 3M two-sided trim tape. So far, so good. Still have a bit of shudder but its just the "arms" rubbing on the gasket material. A bit of silicone (i.e. dielectric grease) should help to quiet it if the gasket material isn't detached. Gave me a chance to clean and lube the windshield mechanism while I was in there.
Ross