If possible,after taping the rubber on as 64fleetside mentioned, leave it for a couple of days for the rubber to take a 'set.'
Basically,If the rubber aint tight it'll leak.
1950 Chevy Advance Design 3100 in Scotland In the Stovebolt Gallery More pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings "Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.