what valve are you using.and what calapers are you using on the front and back.

I used to run the adjustable proportioning valve with the handle on it. And from adjusting the pressure, I never really found that there was much of a difference on my buggy. I use wellwood 4 pistion calibers in the back. In the front, I use 2 piston wellwood calibers. 2 years ago, I ended up taking the proportioning valve off. Because it just rusted in place and was not working anymore. What I found was the difference in the size of the calibers being the big one in the back that has more stopping power. The little ones up front that has less stopping power was worked out really well. If you size your calibers right, you will not need the proportioning valve. So what you outta do, is put the ghia calipers up front, and get some four piston or bigger for the back and you will be set.