PG,
Couple of things:
As far as I know, SCR's aren't "Conducting at startup". They need a signal on their gate to start them conducting.
Also, I didn't know SCR's do current limiting.
They are ON or OFF.
I have bashed a couple of thoughts out but haven't tried them as similar to the origina circuit.
Few components and SHOULD work.
I can try to make a JPG of the schematic if you are interested. But it is really difficult to make drawings with the programs I have at hand.