we are currently in day 5 with a hatch, however the egg turner keeps malfunctioning, the metal stud or shaft that on the end of the motor had a plastic wheel that keeps slipping off the turner. that's when i step in to fix the plastic wheel, now about 4 or 5 times since day 1. this is approximately the 4th or 5th time we've used the turner. do these turners wear out over time? should we take the egggs out of the turner all together and turn the eggs ourselves? which would be better?