Well I took my hearing aid into Bates College where they train people in the hearing technology. (Its free) They said the feedback was from dirty filters, two of them and the tube was getting hard. Boy what a big difference that made! Sounds like new again... so it will last me a couple more years before I need a new one. Also, they said it takes software to adjust the delay, so as soon as they get it, they will fix mine. Indeed, they said it was the older folks who took their time putting the hearing aids on, hence the delay. It is two groups of older folks. Ones like me who had HA all my life, no problem, goes right on... it is the baby boomers who are losing their hearing who take too long putting the HA on as it is a new experience for them. So the person a couple of us were chewing on for picking on older folks was half right after all... Also they said technology advances so quickly like the smartphones that HA improve a lot every year now. So I may start looking into a new one.
This is where I took mine today:
Bates Technical College: Hearing Clinic
This is the actual training class:
Hearing Instrument Technology
They will do all tests and recommend the proper hearing aid for you and even order it for you at cost, quite a bit lower than what your hearing provider will charge you. So check you local community college for that type of service.