Evolution of Max IV?

[REFAK]

I was wondering if there is any place to find the evolution of the Max IV? What year did upgrades get made from the factory? Solid axels, bearings etc.

[REFAK]

Max IV evolution

Come on, someone must know what years the factory upgrades/improvments came out. I am looking at some used machines of different years and want to know what years are the best to look for. Thanks for your time.

[Roadtorque]

I have zero idea. I'm sure someone on here might know. Give it some time, people are often out of town during the summer. Your best bet would be emailing/calling RI. Surely they would have the most accurate data.