First off I'd have to say running in the top five anywhere is pretty darn good, congrats. Too much stagger can make the car strange on the straights. Just how much are you fighting the car in the straights ? If its literally a battle then something aint right, if it's just a feeling that the car wants to move to the left some I'd have to say maybe the car is ok. Some nights no matter how good your car and driver combo is, somebody is clicking and runs better. I'm sure you'll get some good suggestions here. Personally I'd check to make sure the rear is squared and if it is I'd try less stagger. Also check the wheelbase on both sides, I believe we run our left side 1/2 inch less wheelbase. Forgot to mention about scaling your car you might have to jack some weight around.