My Hotpoint WMA33 is now 5.5 years old and has just started a loud banging on accelerating to spin and at spin speed. It can occasionally be heard at low speed as well. I spun it empty and there was no banging. I opened it up and looked / felt all over for anything loose, but with no success. When turning the drum by hand it feels a bit rough, but not obviously so. It gets used on average once a day. Is it worth to call the repairman, or just replace it ?