I'll second the bench bleed suggestions.

fore,i've been running a similar set-up,except I have discs on the rear. I have NO proportioning valve,i've had a couple of panic braking situations and have had no issues with rear wheel lock-up.

Last edited by jockbolter50; 07/13/2015 11:32 AM.
1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.