Fujimo, these limbs have a clear plastic spacer in between the limb and the riser. Also, being an ILF riser, I backed the limb bolts out 2 turns to reduce the weight a little so there is a slight gap in between the riser and limbs. I definitely feel some flex in the riser at the grip but it is a lot less now that everything is shaped. I shot it a lot today and it shoots really nice