I bought a well kept 1998 21' Wellcraft CC with galvinized Shoreland'r trailer recently. The trailer is in excellent condition except for one thing. On each side rail, about 1 " behind where they are welded to the tongue, there is a rust through on top about 3" long and 1" wide. The weird thing thing is that they are exactly the same on both sides. No other rust through except here. I plan on having it fixed. <br /><br />Has anyone else experienced this condition? Any suggestions on proper way it fix it?