I am installing a pedestal sink over tile laid on basement concrete floor. Although the pedestal base has holes to fasten it to the floor the configuration of the holes makes it almost impossible to put any type of fastener through them and then tighten them. The base was cast so that there is porcelin about 1.5, maybe 2 inches above (like a ceiling over) each hole therefore making it impossible to put anything straight down through the hole....plus it makes that space so miniscule that any type of fastening tool that I know of (other than one's fingers) cannot be used to turn/tighten. It's a most confounding situation. If they had just let the area above the holes clear and wide open... So I need suggestions for anchoring the pedestal to the floor. Is it acceptable to use some type of adhesive insteading of bolting to the floor? If not, can I use a bolt like they provide for the sink portion which I could place in the floor first and then position the pedestal over top and then use a nut/washer to tighten down (with fingers and then what, I don't know??)