WF 49 Bruckner 7: gain riding?

A friend gave me a CD transfer of Japanese EMI/Toshiba LP of WF/BPO '49 Bruckner 7th. The peformance is wonderful and the sound is quite good for the period, reasonably warm and detailed, if somewhat congested in tutti. What I noticed, however, is that during the buildup toward the end of the Adagio, the music sounds as artificially kept at lower volume with a rather sudden crescendo - something absent in WF's '42 recording of that mvt for Telefunken. I wonder if those who know the '49 7th from EMI CD set of Bruckner symphonies (or from Toshiba CD) noticed some evidence of 'gain riding', or if it is just a feature of the Toshiba LP issue. Thanks,

Any recording from 1949, especially a recording of a broadcast, is going to have gain riding.

Agree. But it is part of the job of a good transfer engineer to correct it as much as possible and in a way that does not sound obviously artificial. What happens in that Toshiba LP is that from 14:20 to about 16:20 in the Adagio, the chromatic build up is kept at obviously artificially low volume (relative to the preceding dynamics) only to increase suddenly (and utterly unmusically) at about 16:20. This may not have been a result of the original brodcast, by the way, in which the sound could have been simply compressed (as in WF's '47 live Metamorphosen), but rather some later attempt to create 'dynamical impact'. My ear finds such results far more offensive than just a compressed sound where forte is inferred from increased congestion/distortion of orchestral textures. Since I think that the performance is wonderful, I simply wanted to know if the artificial dynamics of the LP transfer affect also the CD issues. (I don't care, however, about the Urania glassy, fake-stereo hyper-filtered CD abomination.)