Another oil leak. Gsi when does it stop

[Ricky180b]

Hi all so after having bad luck with 3 sumps my 4th one was good. Did everything spot on. I drove the car and now she leaking oil again but not from the sump. I seams is comb from the oil filter hosing. Now someone said there are 2 nuts tat need tightening. I've had someone take a look at fist they said I've got the wrong oil filter so I got one from vauxhall ad is still leaking. Now the gu is saying. Need a new housing where te oil filter goes onto. Has anyone got one Or any ideas. I was thinking to get a vectra drip Tay and modify it to fit

[planetc]

oil pump gasket? sandwich plate? clean thoroughly then run it up watching very carefully for the first drip to see exactly where it originates

[btcctroy]

Sandwich plate is common.
Oil pumps can leak if they use the paper gasket. Was later changed steel