hello, thankful this site is around as it has helped me several times in the past although i have just become a member. Question is: i have a split coil carrier unit with approx. 100 ft run, installer chose to use 7/8 instead od 1 1/8 suction line. Unit is 410a and running around 100 psi suction, below freezing point hence the coil freezing. txv is controlling superheat. Wondering if it is possible to install a parallel suction line (3/8") to achieve the same pipe I.D. as the 1 1/8" would have been, and save myself from running all new pipe. i would duplicate the existing trap as it will be needed for oil return. Has anyone done this before or have any suggestions. Txv is working correctly, airflow is not an issue. Suction pressure is low and fvreezing coil, unit is not low on charge as subcooling is 10 f. thanks in advance.