I now realize my OP had an error, the escrow is going up for existing vehicles with the new lease.
It's going up Jack, NEW lease coming for the new QC units and as stated by others there are a few changes, minor, but they are in there if you fully read the lease. One is the Escrow is going up, but the $ field was left blank on my copy. I have since learned it is going up $100.
Don't sign anything with blank lines. We have having a few things looked at on the new lease. We will stay with FedEx but are not signing the lease until all questions are answered, and we are happy.