Mike,
You'll notice on your first collimation with the new equipment, that it's lightyears better than the old way. I found that out with my 12"LB.
Andrew I bought my knobs at
www.Astronomy-Shoppe.com, Tony Costanzo is the owner and very good to deal with.
Mike used
www.bobsknobs.com another good dealer.
They are both in the U.S. with about a 10 day delievery time.