[sms8921]

I purchased a brand new Snapper pro 200xt with the 61" deck with a vac bagger. I recently started to bag with this mower. I am finding it very hard to get it to bag nicely at all. It seems it leaves a line of mulching up grass under the vac every pass and sometimes it doesnt suck everything into the vac. I feel like the discharge of the blades is overpowering the actual vac itself. Maybe its pushing to much grass into the vac at one time. I dont know but the only way I can bag is if I go about 1mph. There doesnt seem to be a whole lot of suction there. Does anyone have and tips? maybe change to lower lift blades?