I'm new to this type of forum but couldn't keep my mouth shut when reading a certain post so had to join. I grew up in one of those households where we fixed everything. It had to be a total disaster before the old man would call in a service person. I've been part of the building trades forever and spent the last 14 years of my career as lead service technician for a heating cooling and sheet metal contractor and loved it. The joints gave out with arthritis so had to pack it in 2 years ago. I'm all for people doing things for themselves up to where they are comfortable. As the old man used to say, when you get to the bottom of the hole, STOP DIGGING! I've never been afraid to call for help on the job. Sometime you reach the point where another pair of eyes are what makes the difference. I had a whole book full of tech service numbers I could call for just about any piece of equipment I would find and I wasn't afraid to use them. When you've tried every trick you know and it still won't go, stop and find a new approach. Remeber, insanity is doing something over and over and expecting a different result.