Hello, I have an Ameritron 811H amp. Using 4 811A tubes. Arb 704 hooked up properly. No ALC line hooked up. My frequency pre-tuned to 1.2:1 SWR. Plate Voltage is fine at 1700Ma. In CW mode with no load, key the exciter to tune up the amp. No grid current at all. Checked, rechecked and triple checked all connections between Flex 6300, amp, MFJ 986 tuner and ARB 704. LED’s light on both the 704 and the 811, plate voltage drops as it should but no movement at all on the Grid Meter. Made sure I’m tuning properly on CW, then AM, then tried FM. In all cases the plate voltage drops, LED’s light, but no Grid Current reading. Showing a photo of all tubes before I installed them into this used amp for reference. All tubes seated and connected at the caps. Any helpful suggestions would be much appreciated.