ISX 525 in motorhome

[Bobbz_329]

I am looking at buying a 44' motorhome with the 525 isx it is a 2007 with 48k on it still waiting on the guy to give me engine hours and picture of the engine tag but it should be an 06 engine CM870 I believe. On another forum there are people referring to Cummins TSB150130 valve Chordal malfunction. What I'm wondering is how big of a risk is it to run it as is or should i be looking at replacing the head with the updated one asap. If I scope it and the valves look ok could corrective tuning for a motorhome make this a non issue? it seems like from what I've read EGR is leaving acid on the valves and due to a motorhome sitting a lot more than a truck getting worked weekly if not daily it eventually damages the valve. Anyways this seems like the place with the most knowledge of these engines so thank you for the help in advance.