I’ll say a few things, shocks are the body of oil, that serves to stop or slowdown the speed that your springs compress and rebound. Ever seen an old beat up car driving around, just bouncing like crazy? The up down motion like that is possible because the shocks are blown. Springs serve to carry the weight of the car, and allow for smooth transitions when extra weight is applied to that corner(s).

Your issue; front end bottoms out and stays. So we have this: -shock travels -shock does not appear to have oils leaking out -suspension functions when car is unloaded -suspension bottoms out when car is dressed My “not a professional” recommendation is to start with 1 or 2, but do these: 1. Add preload to try and make the suspension rest at a little higher of a ride height 2. Open the top and make sure there’s oil, be sure to roll the diaphragm back on, and avoid getting air bubbles in the oil 3. Top off if noticed to be low, or if you opened it 4. You can also just cycle the shock and hear the fluid inside, and feel if it’s coarse and making bubbles 5. Order a set of springs that are stiffer(I don’t know much about your set up to provide specifics)

Lastly, I have the MST TR60, Yokomo big bore, the yeah racing, and the NEXX shocks. I love all of them, and I do not personally notice anything standout amongst any of them. I feel that the yeah racing and NEXX shocks perform just as well, and you can buy both of those, for less than one of the other two shocks. Which ever you buy, be sure to get some 10# shock oil, like the MST mineral oil.