sorry bout that, don`t know what i did wrong, but from looking at strap, i view it as to take heat away from it add some more fuel thru powerjet to open up or take some heat away from it, i try to only make just enough heat on plugs to have motor running good, maybe make`em last longer, up to a point you can make more power with more fuel and then taking some away till it still runs good, for me what that does is keep me from chasing my jetting from earlier in warmer temps to cooler temps at night, mine has usually wanted more fuel during daytime and alittle less at night, if i make enough rounds to last that long, usually it no more than a full turn more on powerjet to bout that much less later, i`m trying some diff carbs now and in the learning process all over again