Okuma LNC-8 from 1993 help

Hi all,
I am a high school machine shop instructor and we recently acquired a 1993 LNC 8 turning center with OSP 5020L. Slowly figuring things out but have some questions.

1. It has an rs-232 port but would like to know for sure if it is capable of sending and recieving cnc programs through it?
2. Is there a way to enter in my own programming with out using the IGF function? I have tried editing the IGF program but when the cycle reaches my custom programming it just stops at that line of code but it is not giving me any kind of error message.

3. When I am using the IGF feature I keep getting a message that my bubble memory is near full, what can I do about that?

4. I am wanting to make 1.2 thick by 2.5 OD aluminum blanks. I have a royal product combo cutoff and bar puller but I am struggling to get that to work. So far I am able to face off, cut the OD, and part off but beyond that I am stuck to get the automation going. Any suggestions here?


5.Anyone near central Colorado experienced with this vintage willing to come train for compensation?

Thanks
Jake