[Amps] AL-572 Question

[pfizenmayer]

Anyone know the Ameritron procedure for adjusting neutralization on an 
AL-572 - or for that matter any hints to check ?

Have a friend with an AL872 that is pretty wild on 15 - will take off with 
certain settings of plate /load caps - showed up with 4 new 572's - guess 
could be VHF parasitics - I have him checking the 4 parasitic suppressor 
resistors .

Thanks _ Hank K7HP