Eddy,
Good question. I think it all depends on adjustable beam vs. dropped spindles. First off, I don't think you're experiencing stiffness. I think you're experiencing travel limitation.
If you're running a lowered adjustable beam then you have very short travel in your suspension. You're probably bottoming out pretty quick. I know JPS likes to use very soft, sometimes "used" stock front shocks, the theory is these cars are even lighter than a stock VWs. This theory works if you are driving slow on smooth roads and don't go through, what, an inch or so of travel? Your tuning capabilities are diminished significantly with the reduced travel as a result of the lowered, adjustable beam with stock spindles.
If you're running dropped spindles then you have almost full travel on your front suspension, which is much better for aggressive driving.
In your case, place a zip-tie around the smaller diameter tube on one of your front shocks at where the smaller/larger tubes connect. Take the car for a typical drive, then measure how far the zip-tie traveled and compare that distance to your travel limitations - stop to stop. See if you are using all of your travel. If you are, it ain't the shocks.
The above is my opinion. I'm not a rocket surgeon an don't give a rat's ass what anyone else thinks.