Speedo tube

I have a 150 HP Mercury Optimax, 2 stroke engine. I had to drop the lower end down the other day and in doing so pulled the speedo tube down a couple of inches too many before I realized. Now that the lower end is back on the tube bellies out in a large loop. I want to pull it back up but can't see where it connects to or where it comes out of the tube under the engine, too much in the way to see.

Has anyone had the same problem and managed to rectify it with out too much drama?

Any information on this would be like a chrissy prezzie to me especially if its accompanied by photos as I am not that mechanically minded. Thanks and cheers in advance.