[Sean Williams]

For basic alignment work the E2 is probably the simplest generator you can buy.

I had one for years, and only upgraded to better gear as and when it appeared at "sensible" prices.

I am a little surprised that the RF oscillator in yours is an ECC82, most I have seen use the ECC91.

In the case of the one I owned, there was a lot of trouble witht he oscillator, and replacement of the osc valve with a new part cured 90 % of the inaccuracy, the other 10% was cured by replacing out of spec components and realignment.

The RF output isn't flat from LF to 100 Mhz - the nature of construction of the generator really means that VHF is more a happy coincidence than a useful feature, but it's intended use wasn't in a calibration facility, or somewhere where accurate measurement of signal levels were a daily thing.

May be worth swapping the ECC82 for something new, typically these would have been left switched on for at least 8 hours a day 6 days a week, this may be part of the problem.

Cheers
Sean