Gap in Seat of Toto S300 Washlet

I finally got a washlet S300 made by Toto its great the only concern is that I noticed the seam between the two halves of the main toilet seat are not completely sealed at places I wonder if water splashing on it can eventually get inside the seat and cause problems. I called Toto and a rep answered and said its normal to have a gap like that on the seat, I find that hard to believe on a Toilet seat that lists for $1400 that a gap like that is normal.

plus when I lift top of seat when its up like that, the whole thing lifts up from base at least a half inch.

If it lifts up, then it's not tightened down. The mounting plate is installed with supplied toggles, and then the seat slides into and snaps in.