Opaulo, You may feel that the seat is already tight but you can tighten it more. You will need to do it from the top of the seat and just use a screwdriver. Sincerely, your American Standard Consumer Connection Team
Gbrain, you can change your flapper assembly setting to 10. This will allow more water when flushing. Sincerely, American Standard Tech Team
Angel, this is an inquiry that should be directed to Home Depot Home Services. Sincerely, American Standard Tech Team
The trap way is 2-1/8" and is fully glazed. The flush valve is a 3".
Handyman, I am assuming you are asking about the rough-in? This is a 10" rough in toilet, your rough-in would be measured from the finished wall to the center of your waste outlet.
As long as the tank is china to china all of the way around with the bowl it shouldn't leak. If it is, you would need a new tank to bowl gasket which would be very unusual for a new install. . If you would like American Standards assistance in obtaining these parts please go to: https://www.americanstandard-us.com/parts-support/contact-us
I would check the plug in the tank that closes when the water in the tank has emptied into the toilet. It might not sit in the hole correctly and water leaks from the tank and drains into the toilet. When it does that, the tank will refill. Then water leaks out again, into the toilet, the water in the tank lowers and it fills again.
If you have a 10" rough in from the finished wall to the center of the drain then this would be the correct toilet. The spec I am looking at shows a gap of 3/4" to 1/4".
We do not stock older model toilet seats, but we can recommend Bemis Manufacturing, the company that makes our seats, and may have a replacement for you. You may contact them at 1-800-558-7651 or visit their website at www.bemismfg.com. Also, you may try their partner company, Church Seats, at www.churchseats.com or 1-800-233-7328. You can also contact Alan @ The Toilet Seat Guy. 914-963-1901.