front brake pads

Hi, I looked in the other posts but didn't see anything like what I am experiencing. My 2003 Grand Caravan (155,000 miles) had the front rotors and ceramic pads replaced by me. I've done this before. Anyway, this replacement was done last summer, about 8-9 months ago. Everything has been fine...

For the first few years of owing my 97 T&C I didn't have any odd problems with the brakes. Within the last couple of years it's been a nightmare! I'm SOOOOOO tired of replacing the front brake pads!!! Using normal semi-metallic pads with "new" rotors (or so the "brake specialty" shop said)...