Rich, Haven't seen this mentioned, but ammonia based refers in RV's in the 1980's suffered some type of (air?) lockup and would not start. The solution or fix was not complicated. They had to be removed from the wall enclosure and laid down, and left in that position for a few hours while the ammonia redistributed in the lines. After that, they started normally. Has anyone had a similar experience? I only learned this after I yanked out an ammonia refer and replaced it. Would have saved a lot of $$$ had I known this trick. Martin Veiner ____________________________________________________________ Click here to save cash and find low rates on auto loans. http://thirdpartyoffers.juno.com/TGL2131/fc/Ioyw6iif3WDnQEg3ni51Hq05VCXK4WTfY XmCYI2sZORaDmvqXD0y5G/