What do you mean, sound-lock it?
Isn’t that the point of the kits? If you change a sound on a kit it will have an effect on every pattern that uses that kit. If you want new sounds for a new pattern wouldn’t you need to create a new kit, load the samples/synths, save the kit and use in current pattern. Then it will not affect other patterns. So one kit one pattern if you like? Sorry I’m trying to understand.