Hi Chris,
You will need the original jack to repair without modifying the cavity as we discussed on the 16th. I received an email on Monday with the picture of the cavity, thank you (I did not receive one on the 18th - we did have some ISP issues recently, so it could be from that).
Anyway, you need a 113L Switchcraft Littel jack. We have them here, and I'll call you shortly to see if you want to order one directly from us.