Recurve bows can be sensitive to the height of the arrow rest. My Hoyt Satori came with an optional block to use for those who wish to shoot off the shelf that puts the arrow rest in approx the same position as an elevated rest would be. The only way to know for sure is to bare shaft tune. In the past when I have done this, I have found that some bows have a persistent nock high unless the rest is built up; others don't. Interestingly, an old Bear Kodiak that doesn't have a hole for a cushion plunger but was designed to be shot off an elevated feather rest exhibited the same problem until I built up the rest to the same height as the feather rest. If you don't want to bare shaft tune, the best advice would be to build up the shelf to the same height as the elevated rest would be, or just use an elevated rest without a cushion plunger.