Does anyone Know of or have a link on how to Reassemble a Merkur Mergress? I got one today i bought off of a member here on BST and For some Reason i pulled back on the Knob so i can Clean it, but the knob doesn't go back in. it has a Tension Ring that i cant Squeeze back in to place, Not as easy as the Merkur 39C / Any Help would be Appreciated Thanks