Need some input on Tempest Props. I purchased a used but like new Tempest Plus 21". The prop has no dings or dents and actually looks brand new. The seller said was only used once.I have never used a prop this large on my bass boat, 1993 Skeeter SX200 175hp EFI. Nevertheless, I installed the prop using a new and proper hub kit but the prop seems to vibrate somewhat at idle speed in gear. I'm wondering if the vibration could be due to the fact of the large diameter of the prop 14.6". The prop that was previously on the boat was a High-5 26" and had no noticeable vibrations at idle speed in gear. Does anyone have any input on this that may have experience with the Tempest Plus? Thanks