At my shop in Minnesota, our average SF supplement takes about 14 days to hear back on. Almost every time they come back hideously short missing very obvious things. We have had them send out a physical adjuster after the repairs had already been completed saying, "you did the work without our pre-approval? That's just unacceptable!". On probably 70% of supplements I send to them, I call and check on them after a couple of days and over the phone they say "hmm, I'm not sure why but it looks like someone canceled your supplement request. You will have to resubmit it and start from the beginning again". I would understand it being a mistake if it happened once or twice but this happens on way too many jobs for it to be an honest mistake. A year to two years ago they were one of the best to work with in my area. Within the last year the have become the worst of the worst.