I built molds for a shop in the late 80`s and we had three of the little boy presses,, I thing they were like 18 or 20 ton machines ,, we ran the hell out of them and they were easy to setup and run but even at that time they were kinda hard to get parts for ,,, I looked at a couple a few years ago but they had been ran HARD ,, I found a Newberry 80 ton that is like new and pre-computer ... there should me manuals on ebay for them? but for the most part there just a glue gun on one end and a hydraulic press on the other end ..
look up PCS-company.com and and make mold bases your self and for the most part you can just make up a stock pile of small 6"x8" hot and cold side plates with your 1/2" alignment pins and then make some injector pin front plates and you can reuse your front and back plates that bolt on the machine and your standoffs and even your injector rear plate ...
once you get your head wrapped around molding you well find its really simple and fun ,,,