About this 3D model

Hi everybody(this is my first design , sorry please take it easy on me..) I made these rubber boots to see if it would stop the vibration that caused a lot of noise on my Prusa i3.And they work ! plus since fitting (touch wood) I havent had any skips in the printing .I used Ninjaflex for the boots . It was a free sample and i am really please with the Ninjaflex .The setting were 227 for the hotend (jhead)and 50 for the bed .No retraction the rest were the default Cura settings.So i am sure someone with more knowledge could give better advise .