help with repacking Yoshimura pipe

[300EXrider02]

I took off my entire end cap from the muffler, and now I just see the core and the packing around it, I thought I was supposed to pull the entire core out to repack? I tried and it would not budge.

yoshimura has seem to put steel wool and then packing around the core, and to tell you the truth, it seems it is packed very well, better than any other pipe Ive ever seen, now I am questioning even doing this. I bought some FMF muffler packing and it seems the stuff in there is better than the FMF stuff I just bought.

Ironic, but now I know why I paid the extra money for the YOSHI, either way, I need to know asap, on to how I go about repacking the muffler...
manually pick out the existing packing, then slide the FMF crap in after? It doesnt make any sense, please help asap

[TC426EX]

Usually you drill out the rivets or remove the bolts from the other end of the silencer (closest to the header) and pull the whole can off. Usually when you repack your exhaust you have to drill out rivets and pop new ones in with a gun based on how they are put together, so dont be surprised. Get used to it man, I have to repack my Sparks X-6 every 3 weeks. I just use regular non flammable fiberglass insulation. It works just as good and I can buy a whole roll of it for what it costs me for the FMF stuff once. I used to run the FMF too, but it just got way too expensive so I switched...

[cals400ex]

yes, this is what was recommended. however, i had my bike coated and they coated right over the bolts on the back of the can. so, i just took the end cap off that way. either way, you should be able to get it done some how.