i have a 36 fixed deck toro and it has a 12.5 kaw engine on it. i just put double blades on high lifts on bottom and gators on top. they worked great on leaves. after about 45 min of cutting i turned it off and finished the job. i felt the spindles and they were real hot. is this a problem? am i not supposed to run doubles on it?? my dealer doesnt say either and the manual is crap so i am confused. mind you that these spindles have no grease points on them. thanks for the advice.