Dear om?s I have purchased a pair of 6JS6C (NOS) GE finals for my FT-101B. Have heard about the little mod which is necessary. Is this also necessary for the B, type or only for the E, EE ? And is this all I have to do? Has anyone made experiences with the GE 6JS6C tubes in an FT-101? Thanks for informantion and suggestion Timo DL1STI dl1sti@darc.de