Sadly this is going to become the normal experience the Pioneer motor design is a epic fail!
I am a diehard Honda products fan, BUT using the rod bearing oil pressure to lube your pistons is a new low in foolishness!!!😡😡
This is a Pioneer problem only the African Twin motorcycle and the Talons motors don't use the connecting rods to lubricate the cylinders on the Pioneer they have a small orifice in the connecting rod to bleed oil off of your rods so any breaking down of the lubrication system, forget to change oil and your break's down (loses its viscositie gets thinner ) bam oil starvation and spun bearing, natural wear the pressure decreases over the engine life as tolerances get bigger or any reason of low oil pressure/flow and the connecting rods get starved.
My dispatcher's stock Pioneer that he bought used spun a rod bearing for no reason soon after he bought it, we have no maintenance records on it?
To explain how diehard Honda I am, I am putting a Talon motor in my Pioneer at 5,100 miles when it spun a rod bearing and trashed the crank, and this after I did a complete over haul with new bearings because of Colorado head gasket issues it had over heated hot enough to scuff the cylinders so I bored it out and put pistons in it I hate doing things by half's.