The holes with arrows pointing to them do not extend to Board 2. The only hole inside the VFO that extends to Board 2 is the one with the spacer mounted.
The spacers shown on the VFO board have provided adequate stability.
Be aware that these are aluminum spacers and can quickly loosen, especially during temperature changes. If the VFO has lost its stability and jumps frequency when touching the board, tightening these spacers fixes the instability.
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