Lokar Pedal Stiff

[strtcar]

I've got the direct fit Lokar pedal in my 67 mustang. Anyone have trouble with the gas pedal being very stiff? I can't even push it down with my hands enough to open the secondaries. I've got the throttle cable pretty short and direct. The way they have this bracket the cable comes out right at the base of the valve cover so I do need to give it some slack to get up towards the carb. Anyone else have this problem?

ps, its very stiff even with no return springs on carb.