I suggest you get a lead check test. Think you can get them online or at a hardware store. You can also collect a sample and send to an analytical lab. Pretty cheap (likely $40 or so). It is best to check before you work spreads it all over your trailer, your clothes (where you can spread it to your house and children) or your tools. Oh and don't forget they did install asbestos at one point or another.
Barry & Andrea
2014 Airstream Limited 30' ~ Silversled
2019 Chevy HD2500, 4X4, Crew Cab