It is more worrisome due to the water pump being timing chain driven, than a timing chain issue itself. Until a couple of years ago, chain stretch was believed to be an F150 issue. Then a couple of incidences in the SHO popped up.
To see if 5W30 is better than 5W20 for your SHO at this point, you should use the same type/brand filter on both oil changes, and wait it out till the end of the oil change to compare. There might be initial quieting with the heavier oil then resumption of the old behavior. Have had that happen on the naturally aspirated 3.5. If you are not doing lab analysis on the oil, you should. Fuel dilution could be an issue.
I hope the solenoid change helps with this issue, you do have to take the valve cover off to replace. Bank 2 is also way easier than Bank 1.