RR425 wrote:I'm positive I lined up the notch and R-L letters properly.
Just to confirm, you lined up the notch with the R-L letters, or with the strut body? The R-L letters don't really matter much...by virtue of bolting the strut mount plate to the chassis, you can only orient those in two specific ways. Not the case for the upper perch, which should be aligned to the strut body prior to re-assembling the strut (you would not be able to turn it once the mount plates are in their R-L installed positions).
Again, a picture would help, just to be sure.
To answer your other question, should you decide to replace them...I run the OMEs coils and have a lot of praise for them. (I also run their struts; not sure how used they are, but the ride is still good.) When the time comes, I will replace them with another pair. Dealership will want a fortune for OE springs (if they're even available), and Moogs aftermarkets are MUCH cheaper at Rock Auto ($52 after 5% discount).