While doing the desmog last weekend, I was pleasantly surprised to discover a Cobra FI2000 under the seat. I guess the original owner got this to go with the Cobra pipes. Anyway, I've found a few articles that describe recommende settings with certain filters/pipes, such as Low: 4:30 High 2:00. I think this means for the screwdriver on the trim pots, straight up is 12:00. My question is, are the two trim pots on the front or back of the unit? Which one is for low and which for high? I can understand the full hour settings like the face of a clock, but how do they get, say, 4:30? Does this mean turn the pot past straight up (12:00) to full right (3:00), then as close as you can estimate to 4:00? Or, should I just leave it alone?