New small bathroom. We are trying to leave room for shower door to swing past front of the toilet, and so keep space behind tank to a minimum (every inch helps). Rough in is at 13 inches, apparently due to floor joists. Can the Toto 14" unifit adapter be shortened to 13" by any chance? Love the Toto toilets-- Is there any combination of toilet and connectors that could result in toilet extending about 28" from wall?