Have you checked out your position when sitting?
When you are sedentary can you get up and move for a few minutes at any points?

Sounds like you are resolving symptoms, however not addressing where the issue originates.
Until you determine where it originates different symptoms will keep showing up.
Have you thought about seeing a practitioner about the tingling?
What have you been doing for mobility work?
Any joint work?
Working up/down stream?

Have you seen the Waterman Basic Shoulder Spin Up?
I recommend watching each video. The shoulder spin up is the 4th video. Click the arrows on the sides to advance to the next video.