The quickest and easiest method to affect a decrease or outright elimination of popping on decel is to cancel out the kleen air system.
This system allows air to enter the exhaust ports to minimize emmissions, but is well known for being a major contributor to popping on decel.
The hose that feeds this system connects to the RIGHT SIDE airbox base, to the back side of the base at about the 11 oclock spot. Removing the hose and inserting a marble into the hose is one way, but plugging the hole in the airbox with hi-temp silicone is our method and very quick and easy.
As far as the t/b gasket, the work is performed on the RIGHT SIDE of the intake system. The complete right side air box must be removed and the throttle body removed from the intake manifold. The gasket goes in between and you must also use the stock o-rings in there original grooves. I also recommend using a thin film of hi-temp sealant on the gasket.
I would HIGHLY recommend getting a service manual. This really is not a job without some experience and/or being able to refer to a service manual.
"TRUE HAPPINESS IS IN THE HEART,NOT IN THE OUTSIDE FIXES!!"
WITH OVER 42 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION!
"WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY"