Bosswrench
That information is gold. I will crawl in there and see if I can locate the final filter while it is all apart. I will get a new TX valve for r-134a while its in bits. I only want to do this once.
Larry - the photo you posted is interesting.
If you look at the bare floor pan photo of 6997 you can see the 4 spot welded loops on the RHS of the central tunnel which were sized to contain the hoses in that run location. 2511 does not seem to have these retention tabs in your photo - perhaps a later factory addition to contain the hoses ?