Hi - I'm looking at picking up a 2nd hand G50 + TBP12.  It dates from August 2011.

Before I push the button I wanted to check a few things

1) Does anyone know if the warranty on the device is still available and can be transferred?

2) I've have heard that earlier models had problems with the transmitter's input jack - some plastic parts were prone to falling apart.  I believe that these have now been replaced by metal parts and are much more solid. Can anyone tell me what to look for in a picture to see if it's plastic or metal (is it the nut at the top as well). Also, is Line 6 able to retrofit the more solid metal parts... under warranty maybe?

3) Can anyone tell me roughly when the stronger units started appearing (assuming that the jack was re-engineered)?

Many thanks.