The Hellcat Is a great flying airplane in any scale. Easy with lots of wing not like a P-40 which snaps easily. There was an article in RC report on the Heritage Tempest a few months back and it was touted as a really nice building kit. as far as the Robart retracts are concerned I have them in a 10 # TF Gold P-40 and they work fine. I like the century Jets Much better as they are much stronger. I have a set of those for My tf Corsair. The Corsair struts are too short for the Hellcat unfortunately. Century Jet makes a pair for the Wing Mfg Hellcat which should fit nicely in the Heritage Hellcat www.centuryjet.com