Have a Trane chiller RTHB150. If the EXV mini travel is set at 18%, will the actual EXV % open still drop below this set point? EXV is shutting right down to some 1% causing low refrig temp faults. I believe EXV maxi travel setpt is 1670 steps for this model! Have recently pulled the gas, repaired leak and weighed gas back in, as per name plate. Any input would be great. Thanks.