Replaced gas valve coils and flame sensor. I avoided removing the drum because I couldn't see any way in h with my forearms I would be able to rethread the belt around the drive pulley and the tensioning wheel behing the blower assembly. That bothered me because the dryer screeches badly when it starts up and I at least wanted to lubricate the support rollers and belt tension wheel. I saw a video on youtube in which a guy actually cut a small rectangular hole in the lower right corner of the right side panel to gain access. There really ought to be an access panel there. Well, I looked closely at my dryer's right side panel and saw that there was an approx. 4" diam recessed circle in the bottom right corner area. It was a knockout, but I was only able to hammer in the top 2/3. I pushed it in and folded it down which gave me access to get my hand in right next to the belt tensioner. I settled for spraying some WD40 on the tenioner wheel as well as the right drum support roller. The dryer is working great and is much quieter as well.