If you're leaving slag inclusions and voids turn up the heat or change your travel speed. If the beads have a distinct V shape to the ripples turn it down. SS stick doesn't fill well at all out of position, so keep it moving, while maintaining a perpendicular (90 degrees to the axis of the pipe) rod angle, try not to add any lead or lag or work angle to the rod as you travel. You only want to travel slow enough to deposit a uniform width puddle, too slow and your slag mixes with the puddle. Different rod brands of the same alloy weld completely opposite some times, you just have to play with them to figure out what manipulation technique works for that brand.