MZ/MuZ Riders

Hi, I'm new to MZ ownership and the forum. I'd like to buy a carb tuning kit for the baggy. And I can find a few threads about them. But they are from several years ago. I'm wondering if anyone has bought one recently and if so where did they get it from? I'd just like to buy the best one possible. Also I'd like to clean the fuel filter in the carb before I do anything, and I can't find any pictures of where it is. Or if its possible to get access without removing the carbs. Thanks in advance, Luke.