ISX15 Idling in farm operation

[CornFarmer]

Thanks for the replies so far guys! JimT is correct, the fuel pump roller tappet campaign has already been completed so I should be ok there? Also, thanks for the comments on regen and idling JimT.

Rawze, this truck has 3.90s with a 13 speed, should be about right for the application I think? Definitely didn't want/need highway gears...

Sounds like getting her fixed would be the best route for my application. Probably shouldn't have wasted the money on the sensors and doser, lol.