Just trying to clarify here, I don't keep up on what you guys call stuff
I'm pretty sure I fixed the 'interactive thing limit' in the most recent exe I gave to HR. It makes it so that things greater than 640 can be linked to placed cogs (making them interactive). As best I can tell, class cogs have been working for things > 640 without any changes. Let HR know if you have problems, and make him provide you with the new exe.