Seeking a solution (manufacturer) or advice for Bath Tub Drain/Overflow Assembly sized for 16 1/2" deep bathtub. In need of a deep assembly with side out configuration. Floor joist is positioned where drain goes. Prefer to have a unit with trip lever. The problem I am finding is the deep assembly bathtub units are not sideout, (example Gerber 41-813) and the standard assembly units (Central Brass 1675-S) that are sideout, the overflow to train is not long enough. The TUB is a delta Classic 40034R The overflow(center) to drain measures 14.5" I tried a Central Brass 1675-S using, but overflow pipe was to short.