That's a good reply - you'e found the forum troll. All ???? and no answers , or ones that are wrong ! I'm a retired plumber so can't offer good advice, but there are good trades on here that will know what's what. Just wait for them to come on. ;)
The design of the pan with the large area of water and the closeness of t'anus to it negates skiddies because there isn't large areas of porcelain for richards to hit on the way down . Also very silent flushing .(y)
I have been following Trump on You Tube - It's something to see , and hear ( -sitting next to a lady senator ) that was a while ago, but an amusing name for him has been aired in the court and is now public knowledge. He is a strange character.
Those full length screws are not great because they cannot pull the flooring ( in your case) down tight . It's the screw that's tight. You need an "old fashioned " screw with a plain shank - those can be used to greater effect . Try it out on 2 pieces of scrap timber (y) clearance holes not needed