Added Floor and Back Wall to Tub

The mesh floor is in between the tub assembly and trailer frame.  The plastic tub and internal frame are riveted together and that assembly is screwed to the frame with four self-tapping screws.  I just removed the four screws, lifted the tub assembly off, placed the mesh floor on the frame, put the tub back in place, and re-screwed the tub to the frame.  A couple of the screws I had to drill new holes into the frame.  I sprayed Boeshield T9 in these areas to prevent corrosion.  I did have to cut the back corners of the plastic tub to enable it to sit all the way back (1/2" square on each side).