Hello to everyone! I bought an opel omega caravan b, build year 97 before about two weeks ago and am happy to own one again!!! no comparison to the nissan kombi I had before! I am new here and have a question: where do you put the standgas higher? The opel runs a bit undertoury when it is warm, ( 500 turns ) and it rattles quite loud. at about 700 turns everything is good. I hope you can help me. love greetings to you