You need to have it work on by someone competent unless you know the circuits and have the tools needed to modify it
![work work](/ubbthreads/images/graemlins/custom/work.gif)
That plugs would make me want to lean out the transition fuel feed circuit only by 30 to 40 percent
![twocents twocents](/ubbthreads/images/graemlins/custom/twocents.gif)
To do that you need a good set of numbered drill bits, #1 to #70, a good pin vise to hold the bits and a good set of taps and dies down to #4 size. I use brass #6x32 set screws to modify the carbs to lean those circuits down
![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)
If you don't have those tools or don't want to do the work yourself try contacting Dominic, Thumperdart, on here and have him do it for you
![twocents twocents](/ubbthreads/images/graemlins/custom/twocents.gif)