An update as for the starting issues i find it does take some cranking when warm when parke on my steep drive but starts after only a few cranks when on on the level so it is pointing to fuel drain back!My mate suggested putting a none return valve in fuel line between the filter head and feed pipe a quick fix but not a cure but will stop any drain back from the filter and will show if it is indeed a drainback issue

I have been driving the Collie around today and noticed the kickdown cable is sticking is this just a cable issue or something more sinister inside the box

i did lube with wd40 which initially helped i thought but its sticking again any suggestions please