Hi, I have just bought an SLK 230, 2000 so am new to this club. I LOVE the car but have a few niggles. Firstly, where is and what is the pse please? The supercharger is rattling like a diesel engine and want to know if it's just about to give up on me. Lastly, the aircon is not working- before I get the system recharged only to find that the compressor is broken, are there any common issues with it? Sorry if I am posteing on the wrong page but will hopoefully get the hang of things as time goes on.