1025r bought new February of 2018, has 38 hours on the clock. While running it today cutting leaves with the mower deck, it began to lose rpm and power under load. A little sputtering too while bogging. The leaves were not very deep or anything like that. I did get it to act up while speeding up without the mower engaged, so I doubt the mower is to blame. I topped off with fresh fuel but did not help much. It's kind of intermittent, runs good for a while then acts up. I haven't changed any fluids or filters as of yet. The red ring in the fuel filter bowl was not floating at all. I drained it anyway but it didn't fix anything. I'm going to try changing both fuel filters and take it from there. I have been using diesel Stabil from day one in each tank full. I'm real careful not to let crud fall into the cap when refueling so I'm hoping nothing is stopping up the pickup. What do you think?