If you only took the plug out ,cleaned and resealed it back in thats fine . the actual tensioner adjuster part screws in and out with Allen keys and has settings ext. the one I did fell out with the plug
but was a easy fix. still haven found the how to I used at the time, it may have gone into cyber space when we had the Melt down a while back .. I will paste the link up in the How to section for you when I get 10 min. to spare, and you can forward my 5% cut for the hand shot to my account