It looks like the light is at the end of the tunnel (its killing my knees on the cold metal) I removed the final bit of the sound deadening this morning, and cleaned up the floor, to remove the residue.
Also started to remove the head lining and the foam, material stuff thats stuck on the roof, tried to just pull it off but you just get fingers full of fluff (not good) so plan ‘B’ was brought in, try and use the same stuff that was working wonders on the bitumen residue, that failed, so I will be looking at other methods to remove this part.