Squirley, it sounds like you have the stock unit. If you have a lot of spooge in the silencer it bakes the silencer until all of the internal components are stuck. We’ll get you unstuck.
Disassemble by removing ALL of the 8mm bolts, the six in the back, the three on the front and the ones (I think there are four) on the side. Use pliers to remove the end-cap by twisting the exhaust pipe. There is a rubber seal behind this cap and, if the person who reassembled it last did a good job, some RTV as well.
After the end-cap is off the first section should slip out. You might need to give it a twist with your pliers. Getting the rest of the guts out is simple, but crude. Put the silencer on a bench with the open-end facing down. Place a wood block on the pipe and hit the block with a rubber mallet or something similar. This should cause the internals to brake loose and fall onto the workbench. If it is real spoogy in there get some carb cleaner and soak the inner walls of the silencer and let it sit for about 15 minutes. Then give it another whack. There is a rubber seal on the closed end as well.
Give it a good cleaning with oven cleaner and repack the silencer. I use red RTV on all of the mating surfaces including the bolt holes. This way it won’t leak.
If you are real ambitious, you can shorten the unit by 5 3/ 4 of an inch by removing the reverse flow area. It will give you as much power as any aftermarket silencer without getting much louder than stock. Best of all its FREE.