First, you seem to have big difference in the Tms, second the Tms seem to be quite high (62 – 69°C).
Are you sure your denaturation in the beginning is only 1 min or is it a typo? Why do you have such long denaturation during cycling? Why do you have such long annealing? What polymerase do you use? What is the GC content of your GOI? How many cycles did you have? What is the template? What concentration did you use?