fwiw, fx loop is trs/stereo jack as well
i still think a switchcraft jack would fit, but i'm also the type to make things fit (not destructively, just creatively) if i have to
feel free to read my mail if you want, just don't steal my magazines!
To tbwrench....
I just want to clarify that the jacks shown in the pix I'd attached are the replacement low-profile (Fender) jacks I'd purchased on Ebay recently.