Just for interest went and dragged out all my manuals. Clymer manages to
avoid all photos of a connected carby.
"Scientific Publications" published Service Manuals in Australia for
all car brands. Were a bit rudimentary. For the early T3 carbs ( centrally
located) there was definitely no clamps. For all twin carburetted T3,s there
is definitely clamps on all fuel connections. The crimp type that leaves a
small non crimped region!.
For Beetles was a bit indistinct but almost certainly not! You could argue
though that if that was the engine they stripped down to do the manual it
might be all just sitting together and not functional.
Cheers
John