Originally Posted by
griffin
You should transform all of your toys at least once, or else it wastes it main gimmick (if it converts)... otherwise you might as well just buy a statue, or leave them sealed in box.
MPM Optimus is one that probably needs instructions first time you do it, as it seems to have a lot of fiddly bits that lock together really strongly, and the weaker parts would probably break if you try to pull things apart that shouldn't come apart, just to try to work out what does come apart in the transformation.
(I haven't finished transforming mine yet... I managed to move some parts, but got stuck working out what moves next, and didn't want to force anything as it felt too fragile - unlike Generations, which are sturdier or have pop-out parts, and cheaper to replace if you break it.)