If the arms are neutral, then that's as high as it's going to get with the links you have. It has either sagged or someone has worked on it before and possibly changed something. When you get everything working and start taking it out for longer drives, then you can get a feel for whether you can live with it.
In order to raise it, there are adjustable links available but unknown how much they would help without knowing what's in there now. Just be sure to read up on the procedure and hopefully someone close will have the holding tool, otherwise the load arm can be chained but is a little more involved. Tool is much easier. You can check the adjustable links out here:
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