My HO-type (using the AmpMaker N5X as a donor) build scope traces

Channel 2 is reading from 1st grid. Input signal is 1Vpp, 500Hz.
Ch 1 Condition 1 - G1 and G2 at 50%/noon, all other pots at 50%
2nd grid
3rd grid
4th grid
EL84 grid
Ch 1 Condition 2 - G1 and G2 at 100%, all other pots at 50%
2nd grid
3rd grid
4th grid
EL84 grid
Ch 1 Condition 3 - G1 at 100% and G2 at 50%, all other pots at 50%
2nd grid
3rd grid
4th grid
EL84 grid
Ch 1Condition 4 - G1 at 50%, G2 at 100%, all other pots at 50%
2nd grid
3rd grid
4th grid
EL84 grid
EL84 grid