Andy69,
glad you got the vibration figured out.
I’d have my clutch disc stick on the transmission output spline after sitting a year or two. I’d always grease the spline when doing a new clutch. I’d have to start the car in gear w the clutch pedal down to break it free. Dealt w this issue the last 4 years of a 14yr old clutch. Casualty of sitting and possibly humidity.
post up some pics when you have the chance. Be nice to see the car!