a727 no third gear

Engine Oil Pressure Test Kit I just picked up this oil pressure gauge kit (one actual gauge only) for cheap from Harbor Freight and used it yesterday on a 904 we rebuilt that had a big delay shift or no shift into 3rd . Decent quality, works great for testing the various ports for line, front and rear servos and governor. If no 3rd likely the kickdown band is not releasing, could be some sort of front servo issue, but like others have stated its likely the valve body. I'd meticulously inspect and clean.