So you have removed the oil drain plug and it only drips out?
You either have too little oil in the bike or you have not removed the proper drain plug all though this seems unlikely.
I have had bikes for 25 years and this has never happened to me as it's a rather basic operation to perform.
I don't see this as a problem but more of a symptom of either very very thick oil, very cold outside temperatures or almost no oil in the bike.
You should be able to drain almost the same amount that you refill it with.
