Hello all. I have a Hotpoint Aquarius TCM570 condenser dryer. The Dryer starts and works fine until the clothes get hot. At this point it begins struggling to tumble, tumbles slowly and then stops tumbling altogether. At this point the dryer is still on, making noises as normal and is heating clothes. i stripped it down. cleaned any dust and cleaned condenser etc. still no joy. does anybody have an idea what is wrong with this and what parts i will require to repair please as i am at a loss.