I found the thread where I was first posting on Steam forums while I was trying to understand Devmode. It's hilarious to look at now because I totally made the "use shift and thing you're scaling" mistake. I even thought it was the game that was broken... although back then, it was quite possible it was. Weird how fast time moves eh?
Check out the thread for a laugh if you like.
"I managed to find the keys to make corners and half-tiles!"http://forums.steampowered.com/forums/archive/index.php/t-1631907.html