You probably have 10-inch brakes on a Dexter 3500-pound axle. Rather than replace the brake shoes, you can replace the entire brake assembly, and do it easily. And best of all, the new assembly can have self-adjusting brakes. As I recall, you jack up the TM, remove the wheel, then remove 4 bolts from the back of the hub. Slide off the old assembly, slide on the new one, replace the bolts, and you're done. I couldn't believe how easy it was.
We had discussions of this several years ago. The price has more than doubled since I did it - but what hasn't? At any rate, here is one discussion - I think there were others.
https://www.trailmanorowners.com/for...ight=adjusting
Bill