Originally Posted by Night_Hawk

you don't lose the buffer until us drop to 1/2 your credit value of the original line.
ie, line is 60 credit 75 guarantee:
drop 10hours: 50 credit paid 65
drop 31 hours: 29 credit paid 29

if you want to get back to 75 - yes then you have to do those 10 hours again. but, if you just want a better QOL f--k the 75 hours