I started an experiment a couple of weeks ago with results that some might find useful. For years, my normal routine has been roughly 10 laps on the linen and 30-40 on the leather. I thought that it couldn't hurt to increase both sides by 10 laps. I have to say that it makes a noticeable difference in the smoothness and closeness if my shaves. Not a huge difference but it's still a definite step up.
If your blades feel like they are just 'almost there', try 10-15 more laps on each side and see if it helps.