|
Moving old ferrite slugs is fought with danger. The Canadian built RCA is is better than the US version as far as the transformer construction is concerned because in Canada they used brass threaded extensions to the ferrite cores. The US sets used slots in the cores themselves.
The adjustments should not need to be much the the stagger tuned cores (bottom ones) unless in the last 75 years someone has been there before.
For reluctant ones, I like to direct a heat gun with an aiming nozzle at the hole to warm it a bit. NEVER FORCE A RELUCTANT CORE. They are very brittle and easily snapped and are a devil to remove and replace!
|