Nickel for the grid chokes is out for the time being. Too long to get, and a bit on the 'spensive side when I can. Not so bad though as good steel is quite available. Unfortunately we missed getting in on another OEM run of them which would have saved a bit.

I am going to look into a few other options for magnetic material which may pan out by the time we are ready to get Iron ordered.

OPTx is no big deal, when we have the number set out, it won't be too long before we have them in our hands. I forgot to get pricing details( I did say I forgot stuff in the beginning ).

On top of all that, I did not get so far as I hoped with schematic drawing.
regards,
Douglas