Did you rebuild it yourself? I'm no carb xpert but I have done a few of these and (as you know) they are a very simple carb. I'd go at in this order; check for fuel spray when you depress the linkage, you should get two nice streams of gas down each side. If not, check the accel pump. It can easily be put into the wrong hole. Check the spring in the accep pump housing. The narrow end should face out, toward the front of jeep. Then check for big vacuum leaks. I had trouble getting mine sealed around the base (sounds to me like this is your issue). I purchased a new gasket (the big, thick one) and it solved much of my leak problem. You may have to go back and clean out all your passages well, especially from the jets to the venturi cluster. It's pretty easy to take the cluster out and double check the flow through it. Your jets are large...but not too large. I run 50's in mine but I've got some mods that demand more. Seems like most guys run 47's or so in the 1.08.
81CJ7, 258, MC2100, TeamRush'd, 3"lift, 34x10.50TSL's, 3:31gears, Scrambler cab