This young man had to have an ELB with circle tiller. I thought the 55 @ 28 would be too much for his teenage build - but I was wrong.
It took me a few tries to start getting the hang of circle tiller. Main trick it to make the bow an even taper from handle to tips - slightly rounder at the handle and ends and a little flatter in the middle of the limb - about 8/5 width/thickness ratio at mid limb. Try to have an even amount of total wood taper even though the shape changes slightly.
Love the way these look and feel with a heavy arrow. Very forgiving and smooth.
PS. The string will wander out of the handle alignment as you tiller and can be brought back by taking wood off the strong side. This is much more pronounced than in flat bow design.