Lc4 620 sc Exhaust plug

Hello Biker! I know, I haven’t written anything more here for a long time, but I still have the KTM from 2008 (BJ 2000). In the meantime all seals on the carburetor had to be changed because they had drawn false air everywhere… Now after almost 8 years and about 8000 km I will probably not come through the TÜV due to the ever louder volume of the exhaust. The examiner at that time already had mercy before right and said there is no more in the exhaust anyway. looking for the spare parts: 2x O-ring for end pot cap 10x Niro rivet 4,8 1x pot wool 400gr front end pot (65€?????) 1x pot wool 90gr rear endpot (35€?????) Is that so correct? And could anyone explain to me how to stuff this thing best? Thank you for your help Greeting Manuel