Ok had a quick look tonight, astonished that the hoses from carbs to manifold were looser than the proverbial at the back of the tavern.
Tightened them up car fired first pull and balanced the carbs with a vaccum guage. Getting late so turned off for neighbours but to my annoyance hose clips slipping away again.
Prehaps the slippery fancy silicone hoses are useless for this job?