ZT1 50 issues

[ZXR21]

I know this is my first post, however, I’m having issues with the quality of the cut of my ZT1 50. I purchased this mower early July or Late June of this year (2020). Mower now has 13 hours on it. My issue isn’t really how the mower mows, but rather the huge windrow that the mower leaves. I’m attaching photos of my last time cutting. This was 6 days from the previous cut. I also cut the entire yard twice and the worst of it 3 and 4 times.

I purchased this mower from a local dealer. Not a big box store. I’ve spoken with the dealer multiple times whom states they have never had an issue. The first time, they gave me new blades to try on the mower which did not help. The second time, I left the mower with them. They stated they couldn’t find anything wrong, though they suggested I try a mulching kit. Well... the reviews on the mulching kit from Cub Cadet are dismal. I went ahead and let them order it, though I haven’t received it in 3 weeks. This might help, though I doubt it. It also appears as though it takes tools to remove which isn’t good as I also have a 1/2 acre field that I mow once a month.

I can’t be the only one with issues. Please give me suggestions.