When going back with the rudder stuff , make sure you put a safety collor on top of that quadrant. You do not want that key to works it way out of there and you have no steering .. Trust me on this one , I have been there .. When you left off of it at speeds , the boat will turn hard left and the wheel will be straight ..
I agree ,get ahold of JJ at Braverfab and he will be able to look at the V-Drive box for you and give you advice on what should be done to it to make it safe .
V-Drive are fun as hell , but they are dangerouse as hell also .. You must check and recheck everything on these boats all the time , stuff come loose .. I was at JJ's last Saturday and he save me and my boat , he noticed that my rudder had slack in it , come to find out the quadrant bolt came loose and I had at least 1.5-2 inch of slack in the rudder .. Tighten the bolt and nut up , problem solved , it could have been a really bad day at the river for me on Sunday making some hard passes ..