Hyper 8 Port Break-In?
You know I dont think any of that is the case, cause if the engine runs with the plug warmer for 5 minutes, that tells you that your settings are not that far off, its just that the engine is so tight, that you need to let it loosen up before you can expect to get it running good, a trick ive learned and used many times(especisly on the 8 port) is just leave the darn plug warmer on through the first couple of tanks, and as you start to lean it out, it should run on its own, if not just keep it on there until it does. BTW the low speed needle needs to be flush or just a hair in. DONT TOUCH THE MID RANGE NEEDLE, leave it at flush!!