@Josie Torres you went from an 85a wheel to a 78a wheel outside and are describing them as feeling more slippery. I've seen others describe that as well, which I initially thought was unusual because you're going from a harder more slippery wheel to a softer and stickier one. The harder wheels will feel more bumpy, more vibration, louder. The softer wheels will feel smoother, quieter. I think what's happening is that your body is interpreting the smoother ride as "slippery"... Those 78a wheels actually have more grip than your previous set. You will notice it more if you try skating on hardwood with them, you won't be able to slide or slip the wheels across the ground in any direction except forward and backward. You can still work on edges and carving, but things like crabs and pivots, you definitely have to exaggerate the heel/toe lifts off the ground. I have those 78a wheels and find them great for trail skating outdoors, but not for dance skating outdoors. For dance skating I still prefer a harder wheel, even outdoors.