Originally Posted by TonyD89

Honestly, that front relief valve is just a hex headed plug with a spring behind it. The dump from the relief valve is higher up in the cover. One should be able to recess the plug (mill off the land, some tapping for more threads may be necessary) and cut the spring accordingly. Or, source another spring. Maybe one could find a set screw type plug withe the same threads and no head.

Just a thought. Take it out and look at it. There's not much to it.