i'd really like to do this repair myself since it's such a stupid little inexpensive part. today i bought a handy tiller attachment for a homelite versatool, and about 10 minutes into use the blades stopped spinning. i put the string trimmer attachment back on and it's also getting very little power to spin. when i take all of the attachments off and just run empty, the drive seems to be functioning properly. up until the tiller stopped i had been running fine with no problems. i believe it to be the clutch spring from everything i'm reading online. any tips to properly diagnose and correct? thanks.