Fixing the seal and replacing the shoes would be ideal, but I'm try to find a temporary fix until the proper repair is done. So adjusting the brakes would not help, unless I am incorrect. But there must be something that could be sprayed into the drum that would decrease friction. Graphite power, silicone lubricant, grease, water, or? The brake grabs badly when cold, and locks up. Also drags for a bit, pulling the rig to the left until the brake warms up a bit. I wonder if siping, or cutting groves in the brake shoe would help - thus reducing the surface area of the shoe that makes contact with the drum.