Read a few threads and pulled the idler pulley and re-greased, the dryer continued its high pitch squealing from what still appears the idler pulley area. I intend to replace the idler pulley itself and am wondering if I should go ahead and replace the belt too (has it become to stretched and causing the squealing?) and what about the pulley idler arm itself? Dont want to have to replace if i dont need to. Other than the annoying noise dryer works great. Thanks!