Hi AVB,
Yes ATV's and UTV's can be really hard to work on. I pulled out a carby on a USA manufactured Honda TRX 500 a few weeks ago. What a job that was! Then it came back later after the muffler broke away from the exhaust. That took 3 hours just to get the pipe through the frame.
A lot of the Kubota UTV's I used to assemble and pre-deliver had rollover frames that wouldn't line up without die grinding the mounting holes just to get the bolts in.
I'm sending this mower out and will report back with news about how it's going. Many thanks for your help over it - much appreciated.