Do it the sooner the better, you never know what tomorrow brings, Right?
BTY, do you still have that '07 Tahoe? You may have noticed that I replaced the drivers side Valve cover to correct a known issue with the old style covers. I did not research the model years correctly and I already had the new style, I had ordered the replacement so I put it on with just the drain hole mod. If you are considering changing your valve cover, you can have mine , it is the new style and all it needs is a new gasket. Let me know , you have first shot !
I'll take you up on that, thanks.