Peter, You mean this engine does not have a way to adjust the injection timing relative to the crank position ? I don't understand... something seems strange .... if they offer an offset key from the factory.. that it would not address the ip in addition to the valve timing...

I only brought up the offset keys because it might be much less job than a total chain replacement given the relatively low mileage on her engine...

I would like to take issue with the quality of the offset key fix you imply... it is listed in the factory manual as a fix at a certain amount of stretch,,, and it is perfectly legit from a mechanical standpoint... it puts off, but does not change what will be needed at some point...