I've already expressed this on Facebook, but I just had to leave feedback again. The one problem I've always had with my most prized Transformer is the inability to move his head, and I've just done this and it's perfect.
I'm not a kitbasher, I have absolutely no skill when it comes to customising figures (the most I've done is remove the connector ports off PCC Heavytread), but this was so simple it's ridiculous. Now I just need to go check out how to articulate the rest of Sludge.
Checking out these forums each day is really giving me the motivation to take up customising. You guys have certainly planted the seed, and going through all the amazing tutorial threads is certainly making it easier to get started.