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Not an 044, but you want about this much arch in the exhaust roof. Flatter will deliver more power, but you don’t want to snag a ring. The arch will ease the rings back in

Make sure the exhaust port has a slight arch to it so you don’t snag a ring. And bevel the ports with a diamond ball and finish with sandpaper when you’re done

I wouldn’t raise the exhaust because you haven’t increased the compression. You can widen the exhaust to within 1MM of the edge of the skirts. With cylinder on, trace the exhaust port onto the piston so you know how far you can go on each side. You need to leave at least 1MM of skirt wider than...