Hamilton STAR Z-Axis Timing Belt Replacement: DIY vs. Service

Hi everyone,

Our old Hamilton STAR uses timing belts to move the pipetting channels in the Z-axis. They are worn and need replacement. Looking for advice before we start:

Can we safely replace these belts in-house? Do we need recalibration those channels afterward? Does Hamilton still provide service for replacing these timing belts on older STAR models?

Thanks for any insights!