Truly Automatic Thing-O-Matic

Like many Thing-O-Matic owners, I ran into many problems with the automated build platform and eventually replaced it with the simple heated build platform. I printed that way for most of a year, but I finally decided to revisit the ABP and see if its problems were fixable. Thanks to many Thingiverse users' contributions, I have finally found a combination of fixes that works!

With the modifications described here, I now have the ability to quickly switch the ABP and HBP on my TOM, with no