I am looking for a ball bearing to fit a 4.1mm Axle on a R/C EDF jet I have built. Can someone tell me if a 5/32" or 4mm bearing will fit the 4.1mm axle. The axle is made for Freewing EDF models. If it will not fit, what bearing size will fit? And where can I find such a bearing? I plan to enlarge the hole to press fit the bearing into the plastic hub of my 45mm diameter wheels. I am open to shielded bearing, flange bearings or unshielded bearings. The tire is about 17mm in thickness. I am not sure of the hub thickness.