[Blind-sysadmins] Service now - is it as usable as it could be with a screen reader

Hi, I have just started using Service Now as part of my new job. i am mainly raising change control items, and adding to tickets. I am finding it a slog to use with JFW and Chrome/Firefox. It is very unclear when fields are read only, there seems to be non-standard combo boxes on the fields, and I am often shunted around on the page for no reason. Is anyone else having similar experiences? i don't know to what extent the system is customisable by the company, even though it is hosted by Service Now. Thanks. Andrew.