I changed intakes,took my torker 440 off and put on a holley street dominator, nothing else was changed but I picked up a very slight bog at wot, ever so slight. Now it is a eddy 750 but it is new and ran fine, no bog,on the toker 440. I did help it some by ,I think, plugging the vacum advance, adusting the carb again. Checked for leaks around the carb and intake, none found. Any ideas? Dennis