definately know about those simple fixes.... plumbing is probably the most obnoxious of the bunch...
most "customers" only see the one minor part that is causing the problem.... and sure as the sun rises, they are gonna tell me
"all yagottadoiz"... thats when I give then the tool I'm holding... if one part is rotten, the rest of them are too...
what I really love is when a "customer" starts the job, bungs it up and then calls me... had one time when a guy tried to change out a leaky valve under the sink... he went to remove the valve, cracked the pipe, left the
threads in the elbow... required opening up the wall, changing out 6 feet of pipe 2 elbows 2 close cut nipples and a valve.
all that needed to be done was to change the seat ( rubber disc) in the valve.... a 30 cent part and 20 minutes of work but turned into 70+$ for materials and 6 hours of work