You should try and download the original images, Sankaku downsizes images if they are large, any image with Sample in the filename is reduced in size from the original.
Base +37, sr331 +18, kai64 +6, elementalanubis +6, harpenjohn +6
Wait... what the hell kind of soft did you use to rip Sankaku? They have notorious defence against such things, and even among the programs I know, there wasn't any mass rippers that support their ricent aditional wall agains "haram" tags like lolicon.