oh, heck, thanks! not sure how i missed it, but upon re-ripping one of the .spc files i did find the kick. (the file is pitched way up like a tom but none of my other perc samples match it, so it is indeed missing)
i wonder if my duplicate file finder tool mistakenly got rid of it, or if i just messed up - probably the latter, oops! it'll be included whenever i do the ToP bitpack again... sorry folks! i'll have to be more careful