Okee, I have War Within Thundercracker & Starscream, and the main thing that's been driving me nuts about them is that their heads are gray instead of black. Now I see that WW Sunstorm has a properly colored black head, soooo... ...let's say I lose my mind a bit and buy some extra Sunstorm's for the sake of swapping the heads of Cracker & Screamer - how hard or easy are they to remove? Anyone do it yet? Upon quick glance, I can't see any visible screws. And having NEVER done any sort of custom or kitbash, I really don't know how to best proceed. Any input or advice would be appreciated. Thanks!