I agree. When they got it correct the car was very competitive. Sadly it seemed to be off way more than it wasnt. Hopefully 2 years of experience will help in getting a handle on these issues.
I don't think it is something that is easy to solve. Was it 2013 that Mercedes had their special test after the Spanish GP and came out like a new team afterward? Even the big teams with their years of experience need help sometimes. Its just that much harder on a new team with little data to draw from and a much smaller team of talent.