[Boater Sam]

The plot thickens.
Set "A" howler, now working fine with its g1 IF amp stopper resistor which has been suggested is a bodge fix.
By shuffling the manufacturers sheets today fixing the other (B) set, I mistakenly tried to follow the circuit for the DAC41, the similar AC/DC set.
And guess what? The V2, IF amp has a 2k2 grid stopper as made!
So I feel vindicated, if Bush found the need in the DAC41, the stability of the IF amp must of been marginal.

Now set "B" is working, not well but its progress.
The 1st IF transformer would not peak on the secondary, so I removed it and opened it up. This involves winding the adjuster fully in to get it out of the can, so it will need realigning fully.
The padder cap, a mica 100pf, had broken off at one end. This is possibly the original fault that the twiddler tried to fix, even a manufacturing fault.
Resoldered and reassembled it now peaks properly.
Unfortunately the twiddler hs wrecked several of the oscillator and aerial coil cores. I have managed to remove and reverse some of them but not all. I will try soaking them in acetone to loosen them.
But the point has been proven and I may just put it back on the "may do" pile. The set is not in good condition, some woodworm, no back, and scratches. It may well get sold on as is.
Besides I'm bored with Bush short superhets with less than good performance, I go away in 6 days and need to pack the workshop up for the winter. And its getting cold and damp here.
These 2 sets have taken an inordinate amount of time to get working and are not anything special, performance is not the best and they are obviously made very much to a low budget.