Just installed a new pegasus kitchen pull-out faucet, but there's no pressure, took off the aerator screen still a trickle, great pressure at wall valve

So you have narrowed down the area which could be the problem. How did you confirm good pressure at the valves? Which one do you have pegasus kitchen pull-out faucet - Google Product Search (http://www.google.com/products?hl=en&source=hp&q=pegasus+kitchen+pull-out+faucet&um=1&ie=UTF-8&ei=cTdGS_ugKtCrlAfSn8EK&sa=X&oi=product_result_group&ct=title&resnum=1&ved=0CCMQrQQwAA)