My keezer collar is almost complete. All I need to do is drill the holes for the faucets. The only problem is that Fedex keeps delaying my shipment of shanks and I'm getting impatient. I want to get it done this weekend, so I'd just like to know what size I should drill the tap holes. It's a 4 1/8" shank. Can't find any info on the diameter for this particular one. Does 7/8" sound right?