It is a inescapable law of the universe that you will always need to run to the store in order to get something that you need to finish the job. I actually read the directions to install a ne bathroom faucet and drain in the second bathroom. I got the faucet installed fine, but I found out that the old water supply hoses were one inch too short for the new faucet. That really irked me. I ran to the store and got two longer hoses and finished installing the faucet.
After finishing the faucet, I started to work on the drain. I shortly found out that the new channel-lock pliers that I bought for removing the trap from under the sink can't be used. There are wide PVC pipes under the sink. I'll need to purchase a strap wrench in order to finish the job. At least the sink is still in working order. The new faucet is in place along with the old drain. I attached the stopper rod from the faucet to the old stopper so that it works. I'll have to finish that next weekend.