Need to replace the timing chain and timing Marks MB 230E W123 series

My Mercedes Benz 230e petrol European model Timing chain came loose. I am going to replace the chain but i need the correct timing marks.
Any help will be appreciated
i bought a kit from ebay hjl auto parts something. I have changed the kit and to be honest i m still not so happy.
The workshop guy said its because its not orginal mercedes parts. The mercedes parts he quoted me was 900 usd per cam.
I think the noice is still there.
i had chanined 2 cam sheft. 1 crunk pully. 2 chain. tensioner. 2 chain guide. 1 chaun balencer n 1 chain guide upper.
😟
The whole thing started with engine misfire cylinder 1 (P0301) and now engine shakes at low speed and when you press the gas.








