those barrel nuts/screws are always buggered, replacements are available from some of the vendors cheap, replace them even if you can free up the originals

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics