What diameter is the W/Gate hole and how much of it is uncovered?I'll agree with the THDP observation,as from what I saw,Terry moves the W/Gate puck about 1/16" closer to the centerline of the exhaust wheel.You could try RamChargers for an oversized exhaust puck[cheap] and install it in the exhaust elbow.If the misalignment isn't too bad,that should cover it.