Help dynaco ST-70 RCA inputs

I want to replace my PBJs with Harmonic Tech.Pro-silways.My dealer said they wont fit the dynaco inputs.Will they fit if I just space the inputs farther apart or do I need to do something more radical? Thanks all
try andy fuchs audio, I dont have a number but he does have a web page. he did mods on the stereo 70 he might be able to help you.
Audio by Van Alstyne has a nice set of replacement input and output jacks for the ST-70 for about $50. You can find it at Rick