Ok, so here we gooo.....
I pulled engine bay fuses F3 and F26, 5amp and 20amp respectively at 4:40 yesterday. I measured 1 hour later, 3 hours later, then again this morning (15 hours later)
Time 0, 1hr, 3hrs, 15hrs
LF 19 3/8" - 19 3/8' - 19 3/8" - 18 7/8"
LR 20" - 20" - 19 7/8" - 19 3/8"...