i just can not understand why even to this day 2011 a lot of wfp w/c are still using the caveman methods of water flow control, i worked out roughly, to pay for a modern technology flow controler like the aqua-daptor, or peter fogwills autobrush, this will cost you lab around 8 to 15 jobs, thats all it costs, then it is paid for, although i do admit, i keep the remote control, and tap at the brush connected as an emergency only,