I had a 5 year Montego Estate back in the mid 90's (don't laugh). It had this annoying noise, sounded like a golf ball rolling about in the floor crossmember, guess what it was - a golf ball rolling about in the crossmember.
When I found the golf ball I also found the remote petrol cap release lever which had not quite been fitted, probably cause the bracket was not in stock at time of build.
Pete
1981 Carmelian Red 2 litre DHC.
Polybush, KYB shocks, electric fan, electric windows and electronic ignition roller bearing struts and anti-dive kit - otherwise standard
1979 Pageant Blue Spitfire 1500 - some restoration in progress.