Didnt say it was a problem ,im just asking if its normal with a cam like this is all.I didnt touch the mixture screws at first and it wouldnt idle like it did with the other cam .I then marked their posistion and tried to open them up reading the vacume gauge and it made it worse ,so i put them back.I had them tuned perfectly with the other cam.Oh yeah ,it needed more intial timing ,and i gave it to it.Just a hair more and it tires to kick back when its warmed up...