trim
 

my trim gauge is starting to act wierd... It has been working great, but now Ill put the boat in the water take off with the gauge working, then after a little bit the gauge pegs up to where it would appear you were running in trailer mode.

I see the anode on the outdrive, is it possible that there could be some corrosion in there?

Most likely it's your trim sending unit. Yes, it's the cylindrical, plastic housing on the starboard side of the lower unit.

These are completely non-adjustable or servicable. If it's bad, you'll need a new sending unit, and a trim limit switch (the cylindrical, plastic housing on the port side exactly opposite of the sending unit). It's not cheap. They need to remove the outdrive to run the wires (which is most likely where the water intruded and caused it to act up) up to the bilge area. I just had mine replaced for about $250-$300 if I remember correctly.