Switch Modification (10 Switches)

I ordered 100 of the Gazzew U4T (Thocky) Tactical Switches and had them lubed. I like the feel and sound of the switches, but 13 of the switches are completely inoperable and many of the others activate on both the down stroke and the upstroke. I have tried exercising each of the problem switches hundreds of times, but it does not improve the performance. I ordered 100 switches when I only needed 89, but I now don’t have enough for my whole keyboard. I am hesitant to order more as I don’t want to waste anymore money.