I had one waaay back, though not a proline it was old enough to be the same deck design. Point being, it SUCKED. Unless you were taking off very little and it was perfectly dry it would just roll out clumps. Iv'e had a John deere and a Lawn boy M series both with rear-side discharge chutes and they work pretty well. The Toro's are just a poor design IMO. Has a lot to do with Toros lack of throwing velocity out that rear chute, even into the bag, which usually (even on the 2 stroke proline I had) would only fill half way if the grass was not dry dry.