Bought a new x310. Works wonderful. When grass is dry to somewhat wet have not had any trouble bagging. Had a few heavy showers today though and started pluging up. I notice that the blades do not have as much lift as the old lx176 that I used to use. The dealer told me that they would heat the blades and put a little more lift so as to work like the old style. Does anyone out there know if a older 42" deck model that uses the older high lift blades might be interchangeable? Would save a lot of time trying to tweek the new ones.