Your mower may be part of those covered in a Service Bulletin issued back in January.
Step 1. Check your serial number on the back of the mower deck. If it is in the range of MZCG-8400001 ~ MZCG-8669999, it may need the updates outlined in the bulletin.
Step 2. Contact your dealer; since your mower is only a year old, it's still under warranty. Sounds like the problems you've been having may be related to the bulletin or other areas that might be covered under the warranty. If so, your dealer will fix it for free, so worth checking. Obviously, make sure you and your dealer understand and are clear about what you want them to do and not do, and what should be paid for by who, before authorizing any work.
Here's a copy of the bulletin, FYI:
That sure sounds like Bullseye's symptoms.
Hopefully, his serial number falls into the repair category.
Thanks much for the bulletin. The fix looks relatively easy.
I priced the parts called out in the bulletin, in case an individual wanted to repair himself. Came to about $50 with shipping.
Biggest expense was the HondaBondHT.