Bicubic Filter Rounding Error

[Cae-the-Kitsune]

In Filters / Upscaling - Lanczos Bicubic etc / Bicubic.txt, six of the coefficients each add up to 127 instead of 128, creating a faint pattern in the image that shouldn't be there. I presume this is a rounding error, but I don't understand the math well enough to know which tap within each coefficient needs 1 added to it in order to correct it. The erroneous coefficients are found in lines 14, 15, 35, 45, 65, and 66 of the file.