Well on the upside, its not your fork seals or ABS unit
As Mellow said, its really easy to remove the pads and clean the pistons first.
Use a toothbrush and some clean brake fluid. DO NOT use spray can Brake Cleaner!
This is for the rotors and should be kept away from the seals to keep from damaging them.
I have some Delrin or Aluminum blocks machined to the thickness of the rotor, and half the rotor
for the purposes that Mellow stated. Its worth making some.
Most shops in my area don't stock ANYTHING anymore! They have to order just about everything.
I believe they do this so it becomes a special order, and non-refundable (read fine print of reciept)
or an inventory issue (less stuff to inventory).
I've always had good luck and fast service from RONAYERS.COM
The seal sets are pretty cheap, and simple enough to replace them.
Good luck, glad you found the problem before you were out on the road somewhere.
Problems are always better found at home than on the road.
Ride safe