Replace motor in Sota Star Series IV,how difficult

Has anybody done this? Does it require any special talent or tools to do this properly? Any place to buy motor cheaper than factory?Does motor come out through the plinth or do you have to pull sub-assembly apart? Any help from people that h ave done this is welcome. Thank you.
Get in touch with the good folks at SOTA; they are super helpfull and more than willing to guide you through this process as well as addressing any peripheral concerns.