[Elecraft] Crystal Tester Trouble!

[Elecraft Reflector]

Hello Group!

I have built two crystal testers from the circuit shown on page 5, Appendix E of the K1 construction manual. The components used were exact values. The circuit works fine with crystals from 10MHz and upwards but good 80m crystals will not fire up the oscillator. I have tried a fair few good 80m QRP crystals (standard package) but no joy. Has anyone had the same problem? Any ideas how to solve it please?

Many thanks, kind regards

Steve M0ECS