changing a water tank requires a 15 minute apprenticeship, a 4$ set of harbor fright tools, and 4 hours of OJT, and a few beers.
I just wonder what a Plumber would do when he encouters this device in the pumphouse:
http://www.electricmotorwholesale.com/SymCom-233P-ENCL/
Plumbers dont know a ammeter, capacitor, relay, or multi meter from a Venetian opera. If they DO, they dont have the Franklin aim book in their truck, so its all shoot from the hip "Yah, time to pull it all out" to the waterless weepy home mom.
Plumbers know pipe, solder, valves [well, some] and glue. And how to get a turd out of a 3" line. the WELL man stocks the tanks, and will be in and out in an hour. And an honest one will find an electrical issue 99% of the time when there is no water. Never met a plumber that could trouble shoot pump power and amp draw.
The well and pump man is a surgeon. The plumber is the guy that puts the stitches in.