I tried converting the files using PDFLRF and PaperCrop and they look quite reasonable.
44-pdflrf.lrf: converted by PDFLRF using landscape mode
040604coop_decis-pdflrf.lrf: converted by PDFLRF using comic-landscape mode
periodic_table-papercrop.pdf: converted by PaperCrop to PDF
periodic_table-papercrop-pdflrf.lrf: The previous PDF is re-converted to LRF by PDFLRF using comic-potrait mode
I re-converted to LRF because LRF is much faster than PDF on my PRS 505.
You can see that the last table is not converted properly.
You can manually re-converted the last page using PaperCop if you set the default output as separate images intead of PDF.
Hope this helps.