I'm a rookie with hp tuners and need some help with my tune. I'm having bad lean surges on decel/downshifts, and otherwise running mostly rich I believe. Gen 4 5.3 LC9 in a Silverado with stage 3 TSP VVT cam, 4.56 gears, 265mm 2800-3000 circle d stall, plus bolt on's. Not too thrilled about how the truck has been driving lately. Most notably since the stall.