I'm getting frustrated with my garage door. It's been working fine for 6 years and now lately it's become a pain in the rear. I was having problems getting it to close until I found 2 broken hinges and replaced them. It worked ok for awhile and now it's really bad. Most of the time it will close most of the way and start making a lot of noise from the rollers/track on the last panel or two before it stops and reverses. Sometimes it will go all the way down and then reverse. I end up having to push the button several times to finally get it to go down and stay down. I've checked the safety sensors and they are clear. All the hinges and rollers look ok. I have disengaged the opener and tried the door manually. It seems to be ok, but alittle tough to move on those last two panels. So I'm not sure if the tracks have moved out of alignment or if the spring/cable is messed up or what.

Anyone know about garage doors and can troubleshoot what is wrong?