Look for the ones with the paperclip next to the title. That indicates pictures attached in the threads. After you've read for an hour or so, you should know what to do.
here is one that I did, you might want to change it a bit. After having it pointed out to me I noticed that the exhaust wants to blow on the chain brake now, so im going to have to remove the existing diverter and put a longer one on it so it wont hurt the chain brake handle. modified 036 muffler
there really isnt much to the muffler on the 036 when you get the front cover off you will see the screen on the side, all i did was carefully drill a 3/8 hole forward of the existing one and then take a dremel with a small cut off wheel and connected the two holes, then use a small round grinding bit in the dremel to open the to about 1/2" wide by 1 1/4" long.