Interestingly enough, I ran into a similar issue not long ago. Mine wouldn't start at all. It happened to be on my trailer already, so I took it in to the dealer. They found hat appeared to be rust flakes in my tank and clogging the fuel filter. Since I bought it from the dealer as a demo unit, I told them it must have been there since before I bought it as I have never filled it out of a rusty diesel can before.
Having said that, I have issues with bogging down like you mention on a regular basis under load. It's usually going uphill on my 15% grade driveway with the PTO running though, so I just have to slow down.
Having said that, I have issues with bogging down like you mention on a regular basis under load. It's usually going uphill on my 15% grade driveway with the PTO running though, so I just have to slow down.