[gregb]

1. The minus of the e-caps connects to pin 1 of the 35W4 tube, which is just a tie point for the B- circuit.

2. The Brown Grey black dot resistor is connected between pin 4 with one side of the line cord and pin 5 and 6 which are jumpered together.

3. The red white and black dot is actually orange white and black. It is connected from pin 3 of the 35W4 to pin 3 of the 50B5 output tube. Yes they appear to be R7 and R8

Let Me know if you need anything more.

Gregb