The main thing is to make sure the oil ring gaps are away from the expander gap. Install the expander, then the upper oil ring it the gap aprox 120 degrees away. This will hold the expander in place. Make sure the expander ends stay butted and do no over lap. Now spiral the lower oil ring over the assy. Make sure you know which is the top and which is the 2nd ring. Make sure you know which side is up. A little oil in each ring groove and skirts. WD 40 on the walls and put them in. I set the top gaps 180 apart. But they'll move while running anyway.
Doug