@Slashee_the_Cow - yeah, the printer does seem to have a curve. if it's only set to heat about 1.5 deg, then I think it uses a lower power level, maybe more of a maintain, than heat to temp.
so what I'm currently using is working, and since I only really print PLA, it works (i know 75 seems high for PLA, but I have the Fula-Flex mat from Fulament, and when i had it at normal temps, the prints kept coming loose. in fulament's documentation, it specifically says 75 deg. and ever since making that change, i haven't had issues)
i did try to use the variable with some subtraction math, but not multiplication. but i think my biggest problem may have been curly brackets instead of parenthesis. thanks for the code sample, i'll mess with it some more, now that i have a direction.