welcome to the garage gish, there's enough Brits here we understand your mangling of the language grin
call'em what you will, they're never easy to install! see if this tip is helpful - if you elaborate on the particular problems you're having someone might be able to advise more

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