Clearly I have misunderstood your info Gary
I took it that the circuit on 12 ,20, 28 (numbers as shown in Eddycurrent's pdf , Actual PSU is idented a,b,c,d,e etc) was external and was needed to provide the 43v outputs on 14, and 20.
It is always simple when you are familiar with the Kit , or even if clear instuctions are provided.
I unfortunately was not familiar . Some extra info with the PSU would have helped