As we all already know... no matter what delay you guys set, it will always get temporary blocked. So stop trying to find out the delay and don't force your account to get banned by playing with the un follow delay.. If your goal is to removing your number of following then its simple... JUST BLOCK YOUR FOLLOWING LIST THAT DID NOT FOLLOW BACK YOUR ACCOUNT i'm on process to build a simple tool to sort out the account that has not follow you back... and automatically block them to avoid you lose the number of follower that might have actually follow you. i tried the manual process of blocking and so far i could remove 4000-5000 following per day, so this is might be the solution for these problem. Instead of doing 400-600 un follow per day why don't we remove 4k - 5k per day I will keep you guys updated.