Flushmate Toilet Units are the BEST!
Ordering parts was good, delivery of parts ordered was good as well and the instructive videos was excellent and I was able to replace the plunger and calibrate the plunger all within 20 minutes time easily. The flushmate unit is 15 years old and being installed in the primary bathroom it is used 90% of the time. The cause of failure of the 503 model flushmate was due to the upper cylinder sleeve separating from the upper control portion!