Also, contact me with other questions you would like to see answered here.
Most manufacturers recommend tuning your piano at least twice a year to counteract the effects of changing humidity. Sometimes if a piano gets little use it may be all right to tune it annually.
The Piano Technician's Guild offers a series of rigorous examinations to its members covering many aspects of piano technology. Registered Piano Technicians (RPTs) have passed the exams and have therefore met a series of quality standards set by the guild for tuning and repairs in the field.
New music wire is quite elastic, and needs to stretch. This happens with new pianos as well as replacement strings on all instruments. Also, new felt and wood will compress a bit, making things fall out of adjustment at first.
Use a dry or damp cloth to remove dust or dirt. If they get a little wet just make sure to dry them right away, and do not use chemical cleaners on keys.
I know it is tempting to try to get all the dust out of the piano, but try to resist. If you'd like I can make an appointment to clean the piano's insides, including strings, soundboard, keys and case.