Trying to change out 12 recessed lights to new LED bulbs. Problem is out of 12 lights, two of them won't back out all the way. I tried turning it counterclockwise to loosen but both turned about one revolution then it got stuck, won't turn anymore. Won't turn clockwise or counterclockwise. I don't want to put excessive force to turn it for fear I would break the bulb and shatter the glass. This is what the trim and can looks like, the trim has a built-in inverted cone, so removing the trim will not give me more room to grab the bulb. Any idea what else to try? Tape the entire bottom of the bulb with duct tape then try turning again?

I have two florescent light fixtures, one in each closet. They are both single tube fixtures using F40T12 tubes. This is the first time using these fixtures since moving into this house. Both fixtures have the same exact behavior. Won't turn on. I removed the tubes and they look burnt, dark gray color near the ends of the tubes. I saw some tubes in the garage (presumed new since they don't look used or discolored at all) and put them in. The new tubes won't come on either. But when switched on, both ends showed a faint orange glow. I tried to tap it a little, nothing. But when I put my palm on the tubes, it lit up fine. Turned switch off, back on, does not come on. Put my hand on the tube and wiggle a little, it came back on. Once on, trying to tap or wiggle the tubes will NOT cause it to flicker off. I left it on for an hour. Then I turned the switch off and on, and it works fine. But if I leave if off for say 30 minutes, turning the switch back on will not do anything. The only way to turn it on is to touch the tube with my hand. Any idea what may be wrong? Should I get new tubes, new ballast?