#1
1. How do I get more feedback and what are some secrets to controlling the pitch of it?

2. For anyone that uses powertab software - how do you replicate the jazz guitar sound on a real guitar?

For everyone else - how do you replicate the sound of a muted clean guitar suitable for jazz?

My gear includes an SG style guitar with two humbuckers ( covered ) and a Zoom Multi-Effects that can boost my distrotion and gain if needed. I'm also using a small amp right now and can't really experiemnt with extrememlt high levels of volume most of the time.
#2
1. Turn up the volume, turn up the gain, experiment in different positions around the amp.
To control it its mainly a matter of muting unwanted strings and moving to the right position for a specific note.

2. Chances are you might get something similiar with the neck pickup with the tone control rolled down a bit into a clean amp