Holley secondaries won't open

I've got a holley 4 bbl 750cfm (pretty sure it's a 4160), electric choke, vacuum secondaries. It's on a 318 with a 2 bbl intake and a 4 bbl adapter. I replaced the choke and cleaned the carb a couple weeks ago. I had to replace the secondary connecting rod because a buddy said the reason the secondary barrels won't open is because the rod needs to be bent :banghead:. I can open the barrels manually and the butterfly valves don't hit anything. But when I open the barrels by hand with the throttle linkage, the secondaries never open, not even a little. The secondary con. rod will move down but it won't move the rod that goes to the diaphragm. It starts up first time but it sounds like it's running rich (if I hit the throttle sometimes, it will bog down and almost stall out). Maybe that has something to do with the back barrels not opening? Thanks in advanced to anybody that can help me out