Charles D Mesquite , TX July 21, 2020 Appliance: Bosch Gas Cooktop NGM5054UC/03 Bosch Cooktop Ngm5054uc/03: Low flame on one burner on Bosch gas cooktop defective holder. How to replace Nut. Replaced the holder and nut and it fixed the problem. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes