The bar blade is useless if grass has one drop off water on it The Standard Bar blade jams up with grass on cover for the belt
The 4 blade kit is a big improvement and throws grass out rear shoot better.
But due to the Shithouse Scag deck design you will need to unclog rear shoot and underside off deck every few minutes if grass is wet this is especially unpleasant if you're cut some dog or cat poo.
Its nothing to do with the 4 blade kit once again the 4 blade cut is beautiful
Also the rear side shoot clogs up to
Thanks Stag for an overpriced poorly engineered deck and fix your height adjustment leavers too Scag you might want to take some pointers from Honda Decks and Ego Height adjustment some leavers you can get your hands on