Received my Seoul P7 3 level warm and my Cree XPG R4 3 level awhile back, finally get to play with them. The P7 is amazingly bright with 2 123's, charging my 18650's right now to take them out tonight and check out run time and throw.
Both fit my 6p perfect, no gap where head meets body, with the springs trimmed two about one wrap. I cut off small amounts of spring until the head would screw all the way down without forcing it and the drop-in was held firmly with no play.
Levels work great with no lag going from one to the next.
Thank for the great drop-in's! can't wait to take them outside tonight.