It could possibly feel a bit mushy because the hose is much longer than the front and therefore has much more opportunity to swell when you squeeze the lever. Kevlar hoses will sort that out.
Or measure your levers from the bars you might find that the rear is wound in more and feels like it's pulling further, when in reality it's set at the beginning of the stroke to be closer to the bars.
It could possibly feel a bit mushy because the hose is much longer than the front and therefore has much more opportunity to swell when you squeeze the lever. Kevlar hoses will sort that out.
Or measure your levers from the bars you might find that the rear is wound in more and feels like it's pulling further, when in reality it's set at the beginning of the stroke to be closer to the bars.