[rwatts7777]

Hi,
Silverleaf shows waste tank is 100% full even after emptying.
Have flushed mx times. even with enzymes.
Have cleaned contacts on, what appears to be a "telephone" line at sending unit.
Have swapped "black" tank connection with "fresh"... then shows "fresh" at 100% full.
I assume I have a bad sending unit from the waste tank.
Was advised to tip coach to curb side before attempting replacement.
Any other helpful suggestions other than haz mat suit??
Any other tests to do before I replace?
Thanks.
Richard