Well, my trailer axle is fixed now. But now I noticed issues with my running boards. I have a single axle Tracker Trailor for my Tracker Pro V16 boat. I recently replaced all my bunk boards with pressure treated wood and carpeted them most excellently. Before I took the old two 8Ft bottom running boards off, I noticed the right side was straight as an arrow, while the left side was sagging a little in the center, and the front 6 inches was curved down a couple of inches. The left side was straight as an arrow after I finished all the work, and now it has reverted back to what the old one was doing. It looks retarded, and I'm disappointed. I like my boat and Trailer to look just right. Does anybody got a clue about this issue?

Pressure treated boards that were still wet.  

Hmmmmm. It's just crazy how it ended up looking like the original one that came with the Trailer. I guess I could set some new pressue treated boards out in the sun to dry out first.

I redid mine last year and I let the boards sit a month before I ever messed with them.  That wood is usually drenched when you pull it out of the lumber yard and the moisture needs to leach out.

They need to be secured in several places or they may twist, bow, and do all kinds of unwanted stuff if just left laying in the sun. Clamp a couple together with some thin strips between them and change them around every few days, and it's better if they are not left in the sun. You might get them to dry straight.

It may be the shape of your boat.  It may be curving it, and that would actually help support it in more places than just where it would on a straight board.  

I would say its your boat shaping the boards. Being that you have a deep V not a flat bottom, your boat has many differnt angles and curves on the bottom. I had to get a new trailer last year and when I bought it the boards were straight ( My trailer has 4 boards and I have a 17'6" foot deep V) after the boat sat on them for a while the two inside boards begain to show a curve to them. They shaped to the hull. Since you said its only on one side of your trailer. Make sure you boat is centered and level on you trailer. It may be sitting to one side more.

That one bottom 8ft board actually curves away from the the bottom of the boat leaving a 2 inch gap. It also sags a little in between the two mounts. The right bottom board is completely flush to the bottom of the boat.