Yes, Triple-C is a good choice, about 1 hour West of me in York, PA. I have a couple pair of those adapters and they were out of stock for some time. Triple-C are really nice folks, who travel to the UK a couple of times a year and bring back little goodies for us. Also, be aware that they have one of the best assortments of TR and other LBC models in plastic, die cast and resin.
Go 250's!