2003 TF
Only just opened the engine access cover and I was surprised that the rear shelf carpet is very thin compared to the carpet on an F.
Also no soundproofing unlike the pad on an F.
Should it have a felt pad?
I'm never sure if it's missing certain items or it's just the cost cutting differences from an F to a TF.
They are a PITA to remove and replace so I would bet that a mechanic or owner didn't bother putting it back. It could also have got wet and been tossed.
I believe that Rimmers has some new ones on clearance along with some fuel tank soundproofing pads.
My bet is yours got wet / fell apart at some point and was discarded.
I have heard of someone covering with dynamat instead in this area but with limited results...they went and bought a proper soundproofing instead after a short while.