HFSS cylindrical dielectric resonator - replicating journal paper results

Working on trying to replicate the results in a paper, however i have been so far unsuccessful to fully do so. I know authors will sometimes leave out important pieces of information so that someone else can't continue on their work but i need this to help me in my own research. I have been able to obtain similar looking graphs with the same shape however it doesn't resonate like it does in the results. The results in the paper resonate at 10.1 GHz and peak above -3dB. My results show a peak at 10.1 GHz but doesn't get above -19dB. Attached is my simulation and the paper in question.

Thanks in advance.