coincidence or did i cause this,

[wellcraftv20step]

sooooo, last night I put the drive on the boat with no issues . I then start the engine and I notice as I am going from neutral into forward and reverse their is no change in sound , I put the shifter in neutral and take a look at the drive to find that it is in gear. Forward I believe from memory ! Shift cable..... Outdrive..... Or throttle . now I"ll be at work all day stewing over this one. What should I be looking for ,thanks