For the tube, go to www.tubesandmore.com and go to tubes and accessories on the left hand side. Click on it. Then scroll down the list that comes up, to A22D-ZZ1040 (this is a range of tube numbers). Click on it. Now go to page 20 (listed at the bottom of the page by clicking on Next 10 Pages). Your tube is listed here as shown below:
T-FM1000
2004 Catalog
page 14
FM1000 - HEPTODE
$8.20
Qty
It would still be nice to know your model number, though.
Thomas