Small Flame at Fire Pit

I recently installed a fire pit fueled by natural gas. I have tied into the meter at the house with a 50' 3/8" hose running back to the fire pit. There is about an additional 35' of 3/4" pipe where the hose connects to the fire pit. I am getting very small flame at the fire pit. Any suggestions? Thanks Attachment 49975 (http://www.doityourself.com/forum/attachments/lawns-landscaping-outdoor-decor/49975-small-flame-fire-pit-img_2774.jpg) Attachment 49976 (http://www.doityourself.com/forum/attachments/lawns-landscaping-outdoor-decor/49976-small-flame-fire-pit-img_2783.jpg)