I worked in a hub for many years out here. I was the top seniority PTer, earning driver's wages (pre-1981 contract) working as many hours or as few hours as I wanted. This was when UPS was using utility drivers all the time so I would be driving and earning as much as regular drivers.
Anyway, wanted to transfer to another part of Norcal, put in the transfer request and was denied. (very legitimate reasons for needing to also). I moved anyway, got on with UPS again as a PTer again, and had to wait 8 years to go driving. Worth the wait. 8 years of working 2 jobs. Wouldn't do it now with having to wait one year for benefits and three years to top out on wages.
My advice, don't leave Pennsylvania and give up what you have unless you know you have something better in the Great State of Texas.