I did know that lifting something on the end of the boom can be problematic. Much of what I know about the 8N has come from a local friend or the hydraulic video that is available for purchase. Based on the video, I figured if the front end does lift off the ground, the hydraulics should lift it. I don't know if this is the right thinking. I had picked up this frame with another 8N that I have (who can have just one), with the same boom.
The safety valve was brand new, fresh out of the wrapper. As a rule of thumb, and in the interest of saving myself some hassle, I just replace them when I rebuild. I had wished I done it in the past. I never know exactly what they are set at. I trust that the "factory" has set these properly. I've got no way to test them.
Still haven't had a chance to drop the pump, yet and take pictures. As soon as I do, I'll post them.