so far so good here, staying hydrated with my favorite adult beverages is key. bike is running ok, every day. the last thing i did was packed the Kerker with some insulation. and the tube is all the way from the cone end to almost the whole length of the kerker itself, maybe 8inches less is all. and i got to thinkin instead of wiring the insulation to the perforated tube, i'll just use the outer exhaust skins to hold it all in, and packed away. i've done it before but i don't remember packing it like that. it was muffled pretty good at first and still might be alittle, but if that was packed wrong or if you have a plugged muffler will it create more internal combustion pressure that could cause head gasket leaks anything like that, i might of asked the last time but i didn't get any cautions or possible warnings about it. i'm taking my chances again here today. it's the closest i get to fishing anymore. thanks if anyone knows.