Following the engine runs - fixed a few details; 1) Right Tach lead installed, After re-reading the funcitionality of the RPM Leads, both L & R leads 'should' be connected, otherwise a mag-check would not indicate the RPM of the 'non-selected' Mag. A 30K ohm resistor is used on each lead. 2) Corrected Oil Temp sensor definition mismatch, The P/N on the Oil Temp Sensor is only one-digit different and that sensor definition causes it to not ready correctly. The -001 is now a -000 and this was confirmed with a heatgun on the oil temp sensor (base of oil filter). Within secs the 10-12 F rise was evident on the EFIS. and 3) re-torqued the prop. Also minor sump oil leak ... could have been the middle bolt on the aft side of the sump. It was not 'tight' to spec.