I bought a 2004 BX23 with750hrs for our Northern Michigan cottage last fall. I ran the snow thrower twice this past winter without incident. Last week I installed the mower and cut approximately one acre of grass when I got what felt and sounded like a spindle going bad. When I cut the PTO I could see the blades had stopped, but it was still making racket as the PTO wound down and came to a stop. When I reengaged, it sounded normal for a minute or so and did the same thing. To me it’s acting like an output shaft bearing and/or race going bad. Can anyone with an absolute understanding of the mid PTO nomenclature of this machine confirm or refute my suspicions? Sorry for the tone of my question, but I’m already giving it my best guess and really looking for someone who’s been there, done that to reply.