I still help but I do not use them for breeding.That is interesting that the malpositioning could be genetic. One more reason not to assist at hatch. Oh that sounds cruel. I'm known to get a shrink-wrapped chick unstuck and let them finish but I try not to mess with them otherwise. I figure the shrink-wrapping is usually my fault for opening the incubator anyways. I'm doing much better with this wooden incubator. The trick is to not open the door until the hatch is totally complete.
Actually, I resist helping and only step in very rarely. It really does work out better that way. I waited too long with one this year but I really do not stress over it. If it did not hatch, then something was wrong with it.