Trailer bunk extend 6" past transom which was ok, I use it as a step to climb onto boat. But decided to move boat/winches back. Marked original axle location for reference. Moved axle back and now have 7% tongue weight (after many tries) which is good. Measured axle from reference line, one side is 3/8" further back. I know i have to adjust to make it almost even but ...... How would this affect the trailer when driving? Boat is 20' and trailer is single axle with brakes. Thanks.