I just thought I'd post a very positive experience with Airfix spares. I recently built a 1/48 Spitfire F21 by cross kitting parts from the Airfix PR XIX and Seafire 46/47 kits. This left me the bulk of parts for the Seafire 47, but I had used up items such as undercarriage, radiators etc on the F21. A quick email to Airfix spares, explaining my cross-kitting and now deficient Seafire and 23 replacement parts are on their way for a very reasonable £5 (including postage!). I thought this was great customer service, as I half expected the response to be "sorry we can't help". Well done Airfix!