I never used the vacu sleeves, cause they're a waste of money! I just used the standard 31/32" bit, drilled for inserts. I then would switch bits to the 1-1/32" and drilled down about an 1" or so to allow for the finger to expand for the vacuum. All you're doing is going down in grip size about 1-1/2 to 2 sizes smaller and the larger drilled hole at the top allows it to expand. Just my $.02, Bruce