When you say that the big error is for the resistor, is that when you are using the nominal values for all of the components, or the measured values for them?Capacitance measured with Vici VC8145 bench meter (also inductor R) and inductor with a GM328 Multi-use Transistor Tester for inductance. On my SZJB BM4070 LCR meter, I get 30.7mH & 76.1Ω for the inductor and 8.3nF on the cap. So the values are very close for both instruments. I can only assume from the calculation results that there might be some error for cap and inductor but the big error is for the resistor? Which measures at less than 1% error than the ideal 1kΩ marked. I could have swapped the resistor but swapping out the cap seemed to resovle measuring Vpp across it with the Oscope.