My mast not only has an aft rake it is not straight, it clearly bends backward. There is no turnbuckle on the forestay to adjust it. The shape of my main does not look correct to me. Do other 38.1s have this bend? I do not have the in mast furler.
David and others have it correct. In more performance oriented boats the backstay is adjustable to add curve to the mast to flatten the sail and reduce drag. The proper amount of bend is related to how the sail is cut at the luff as well.Some bend is generally desirable, especially with a conventional non-furling main. How many inches of bend do you think it is? Can you describe more specifically how the main looks wrong? Too much bend would usually lead to horizontal stress wrinkles from the midpoint of the mast back. The main sail probably has a certain amount of pre-bend built in. More bend will de power the sail a little extra. I wouldn’t go cutting anything until you’re sure there really is a problem that you can see visually and in the way the boat handles.