Is it a Kokatat? If not, perhaps just contact the manufacturer and ask for a few scraps of fabric and do Aquaseal patches. An Aquaseal patch will never come off especially if you run a bead over the edges on a 2nd coat. Don't tell them you have a tear but a scuffed area because drysuit manufacturers get nervous about liability. Literally you could patch the areas with any waterproof fabric but it is not easy to get scraps especially matching the color.