That’s not Colby’s business. I did provide his email, which I somewhat regret because I feel I’ve violated his privacy. It was too late to delete once I realized my indiscretion.
Within the last 8-10 years I’ve bought parts for DV505 and 501 from the US distributor. Admittedly these were counterweights and an AS weight on its string, but it can’t hurt to ask. After all, he does connect with the factory.