I would like to thank Benny for his efforts today with my astra.
To everyone that is reading this, Benny is a really nice chap and a great mechanic.
Today he changed:
the timing chain with all the relevant bit that go with it,
alternator belt (the original was falling apart)
crank pulley for courtney lightweight/balanced one
exhaust manifold that was found to be cracked with a 4-1
BE WARNED!!!!
I sent my vin plate/engine number etc to Vauxhall, they said everything was ok with it, the chain is fine as it has the knotched bolt etc
Low and behold i have got the small oil jet!!!!!
Once again, thank you Benny!