Scar tissue removal?

I had surgery on my throwing shoulder a year and three months ago. I had anterior and posterior labrum repairs along with rotator cuff interval closure. Even after months and months of rehab and stretching i don’t retain my range of motion.

I probably won’t get my velocity back until i get that range back so i’m considering scar tissue removal. Has anyone have this done? Was it successful? What was your recovery time?

Also, is there any alternate ways of breaking up the tissue without surgery??