I know you are all gripped in anticipation as to the outcome of my problem.. Umarex emailed back:"I apologize for the delay in responding, we have been having some computer server issues. I have supplied a 15% discount code you can use on your next online purchase in December for all Colt accessories available at www.colt22rimfire.com and all items at www.umarexusa.com as well. Just enter the code at the time of checkout. Please know that this code can only be used once and does expire at the end of the month." well that was nice, but"I dont show a size for that screw but we have them for $2.00 Shipped to you. I would be happy to assist you in ordering. You can only order by phone @ 479-646-4210 ext 507 or via this email by providing your shipping address and credit card information."Guess I'll just go to Ace or someplace and tinker around with some screws. Then, in 2 weeks when I get around to actually doing that - and not finding anything, I'll give this lady 2 bucks..