Olympic model 950 tube issues

[kramden66]

I'm done for now with the porthole and moved on to an Olympic model 650 set , well theres a couple tube issues i thought maybe someone would have some opinions , first is the audio output is supposed to be 6K6 according to the tube chart and sams , whats in there is a 6V6 , now was this someone trying to improve the audio quality or will a 6V6 not work in place of a 6K6 ?
the second s again according to the tube chart and sams the 2nd sound IF is supposed to be a 6BA6 but in the set is a 6AU6 , again will that work or should i put a 6BA6 there ?
one side note is sams says its supposed to have a 16AP4 but the tube chart and the crt in the set is a 16DP4 , perhaps this was just not mentioned in the sams or its a later production with that crt added because the model number instead of being 950 it is 950G , nothing important but was interesting.

mike