You have to be quite careful with Down Force when rotating his wind shield (many people have cracked theirs). The rest are not difficult to transform just annoying and crude. I actually found the transformation from truck to robot mode for Not Motormaster quite straightforward. It's still fiddly but not so bad in the end. The BIG problem is going to Intimidator where there's a part where you have to rotate the torso connector, which can be quite scary.