first repack the silencer. that will help tons as I bet it hasn't been done in years. Second you can take an inner tube from a bike and cut it about 1 foot long. Then slip it over the silencer so the curve points down. This will help deflect the sound waves a little. We let my kid ride his 65 in our yard and the difference with the tube is noticable. luckily out negihbors are cool. If you ever want to sell the 60 let me know. I know a guy really looking for one.