Where can I find downloadable or complete online instructions for Knex model #63030?

I haven't been able to find these instructions, but you may be able to
get some help directly from Knex by filling out the online form or
calling the toll-free number listed here:

http://www.knex.com/contact.php

Here is a site which offers this product for sale:

"Knex Roller Coaster is a 3 ft. high, 8 feet long construction
challenge containing 2400 pieces in two configurations with well-done,
pictorial color instructions. You can use the hand crank to hoist the
roller coaster car, or the optional Knex Motor Pack can be the
powerstation. Knex Roller Coaster . . . . AB-63030 . . . . $120.00."

http://www.edusphere.com/themes/knex.htm#coaster