As you say, this is a known problem and is related to improper tension on the timing belt.
More here: Villager Quest FAQs (Click on Subtopics and drill down to Broken Crankshafts).
Are you sure it's not coming from the rear?
I'll probably wait until my next oil change, before I deal with it again... if at all. The van's running fine otherwise, so at this point I'm not really worried about it. Just nit picking.
Hatchbacks & Wagons Host