Noticed Terry Paget had a similar issue not too long ago... could I get a second opinion from someone (link below)
http://www.omegaowners.com/forum/index.php?topic=138599.15
As I read it he appears to be suggesting there was a leak from one of the hoses going to the top of the fuel pump, due to use of jubbly clips, not fuel hose clips... mine are the 'proper' clips, however they have been off and on quite a few times, wondering if they've been bent / deformed once too many times.
Doesnt answer the random stall issue, but the slow start fits.
That was February 2017, seems like a long while ago. I think that was on the silver Omega estate I bought from forum member ajsphead that I scrapped some while ago, rust. Since then I have had more trouble replacing Vx spring clips with jubilee clips, will I never learn?