I have a Scag Turf Tiger with a 61inch Velocity Plus Deck. I have been tossing around the idea of getting the Clam-shell bagger from Scag. . I was hoping I could get a few questions answered on here about them. 1. How much do they cost? 2. Does running with one noticeably increase fuel consumption 3. Does running the impeller drastically decrease pulley and spindle life? 4. Is it still possible to access the engine reasonably and do maintenance like oil changes with the Clam-shell bagger mounted? 5. If not, is it relatively easy and quick for one man to remove the Clam-shell bagger to access the engine area? 6. How hard is it to remove the impeller so you can revert back to normal discharge. 7. Are the units well made and will they hold up for the life of the mower if taken care of? I am going to be using this for personal use and I am trying to decide if it wouldnt just be better to just buy a used mower with a bagger for when I need one or commit to getting a bagger for my Scag.