The first 2 images show the difference removing the gasket on the 40-1354a makes.

 

RS1354a_1_on_IB_5ms_gate_with_gasket.jpg (28783 bytes)

RS1354a_1_on_IB_5ms_gate_gasket_removed.jpg (28814 bytes)

RS1354a_2_on_IB_5ms_gate.jpg (28229 bytes)

RS1354a_3_on_IB_5ms_gate.jpg (28324 bytes)

RS1354a_4_on_IB_5ms_gate.jpg (27250 bytes)