Is it the APC props??? Or is it the prop size??? That is an ugly spinner, by all means change it !! Change it tomorrow!!!! Mater of fact, remove it now, very ugly!! Fooling aside, a good aluminum spinner will also be a safer spinner. Problem is finding a three balde spinner so you may want to change props too. A nice aluminum spinner and a bullet proof Master Air Screw on your trainer. Sure is fun spending other peoples money!! Just joking!!