I too have the version of the #2 exhaust pipe that requires replacement. I've had the new replacement pipe for weeks and have just been waiting to perform the swap when doing an oil change .... likely today.
I'm guessing there will not be a need for another replacement for the #2 exhaust pipe ... so if I were you, just make the change now while it is easy for you and don't look back. You will have peace of mind during your first flight and that will be one less distraction for you to worry about.
RV-12 Wings, Empennage, Fuselage, Finishing, Avionics and Powerplant kits all completed
Dues paid until September 2020