Is my dremel dying

Well it is Christmas day and the living room is a sea of wrapping paper carnage. The kids are happy with xboxes and kindle fires. Wife is happy with Brad Paisley and Lady A tickets and dad has a new hand power planer.
Well I was working out in the garge, playing with my new toy and did some dremel work and i noticed it had not working just right. seemed to be binding. do i attempt to see if something has jammed in the brush and armature or will Santa be extra nice to me and get a new dremel. I have had this one about 10 years. Wish it could of lasted a few more. i have been using it alot with this build.
Well I was working out in the garge, playing with my new toy and did some dremel work and i noticed it had not working just right. seemed to be binding. do i attempt to see if something has jammed in the brush and armature or will Santa be extra nice to me and get a new dremel. I have had this one about 10 years. Wish it could of lasted a few more. i have been using it alot with this build.