After the test ride all was well with noticeably less oil leakage from the top end ...which only made it easier to track down the remaining leaks!
I'd noticed the pipe to the rockers was split and after cleaning the oil tank connections there was fresh oil there again so I decided to remove the tank, give it a flush out and see what was what - well...the 1/4" hose to the rockers was attached to a 1/8" pipette into the banjo, I think this is why the old pipe had split so I turned up a new 1/4" hose barb in brass and soft soldered this to the 1/8th pipe to give the flexible pipe something to get hold of.
Then I pulled the feed and return hoses off and couldn't believe it but I should be used to these surprises by now.

The feed pipe was cut so short there was no straight length at all for the hose to clamp to, the return was OK but looks a bit untidy. I stripped and rebuilt the banjo rocker feed take off with new fibre washers, a Dowty washer and some Loctite anaerobic sealer. Then I made me a new pipe out of 8mm brake line steel bundy tube, bent the 90 degree and flared the end to help keep the flexible pipe on. Turned up a new brass male 1/4 BSP fitting and soft soldered these together, reusing the old nut.
Pretty happy with this, the old fitting was ovalised and probably the main reason it was leaking. Happy with the way this has gone so I might make another tomorrow to replace the scruffy looking return side pipe. The straight connections at the engine are OK and don't leak so they can stay for now.
The steel bundy brake line is ideal for this, fully annealed so it bends easily without flattening, has a zinc external anti corrosion finish which solders very readily once you clean the oxidation off and has a copper inner lining so should last forever. My new hoses are 5/16 (8mm) auto transmission lines, cheap, made to handle high temp and pressure and readily available. The rocker supply is quality fuel hose which is more than adequate for this job. The whole job should be done for about $30 (or 15 quid)
