I'm trying to sort out a few things with my pica. I haven't seen many others using one. It is a rev e 24 volt. I have a silicone heat bed that needs to be wired with an ssr. To my understanding, the pica has an option to include the ssr, but when I purchased mine, the option wasn't there. Is there a special ssr that I need to mount on the board that can be purchased separately? It looks like I need at least a 5 amp ssr. My heat bed is 500 watts, 110 volt. from the calculator it gave me roughly 4.5 amps with those factors. Also, I'm not sure which spot to hook the servo for the bed leveling up to. Lastly, where is the spot for the extruder fan? The one that turns off and on. As of right now, these are the only items I'm having issues with. The next step after this is going to be the programming, and I'm pretty sure I'm going to have questions about that. Any expertise is much appreciated.