JT, it is likely that the parts maps are no longer accessible, at least to any new users since the Studio\Scale Modelers forum site is "closed off" to new membership (I requested a membership over 6 months ago and never received a response.) It is even possible that the original 'caretaker', Jawsmodels, has "gone quite" and didn't have anyone to act as his back-up in case he could no longer support the administration of the site.
He hasn't had any activity here since June this year.
Regards, Robert