RIK rings are good ones! I use them often.
The hone: you are better off with a (fresh, new) set of straight stone hones, which you can get at most auto parts stores. The ball hone will leave the distorted cylinders distorted, which is why the old rings leaked. On these Fours, the outer 2 cylinders always are overcooled, which makes them press in toward those 2 pistons: if you carefully measure the bores you will find the most wear on those 2 corners, in something resembling an egg-shape (blunt end toward the outer front corners). If you're lucky, it will only be a few ten-thousandths of an inch: if it is more than 0.0010" then your new rings will last maybe 8k miles before they lose the ability to seal, too. The best fix is to bore a step: this will restore round forever now, as the cylinders have now cured. Lacking that, the straight-stone hones will show you where the top ridge is, and you need to hone until that is gone. This will take between 3-15 minutes per bore, depending on how often you stop and clean the stones. Be sure to use some light oil while honing, too, which will ensure the stones don't chip.
