I've had pretty good luck reassembling the spike end to the case with large needle nose pliers. I grip the spike in the smooth part of the plier jaws (to avoid tool marks) and get the case started onto the ridged part of the spike plate (there's a small chamfer there), then just push from the contact end with my thumb. If it doesn't start easily, rotate a quarter turn and try again ...
I've been dumping all of the spikes and cases in a tray after soaking and dry burning, and assembling them at random. If one gets stubborn, just try another combination ...
Finally had a coil that actually failed, probably one that came with the original kit. The coil was deformed anyway, had a dip in the middle, maybe from one of my early attempts to push in a stainless steel wick ...
Filling the SS wick with cotton was not a great idea, the cotton burned after a few hours of use. So I've settled on just the pre-rolled 350 mesh wicks. Had the same ones in the eRoll for about 3 weeks now, still going strong. In the Elips, I do get an accidental dry burn occasionally, which leaves bad tasting gunk on the coil. It does not get better with use. I always carry a primed spare, and soak the burnt one in alcohol later, then open and dry burn to clean the coil, and reassemble. The bad taste is coming from the coil, but the SS wick is fine after a soaking in alcohol ...
Got about 20 attys in rotation, and my batteries will probably give out before the attys do. It seems like a big investment, but I was spending more than that in a couple of weeks with analogs, and had nothing to show for it but a chronic cough and a pile of ashes ...
