Vortex Sound Research

Hi all. My doepfer basic VCOs are slowly going - hard/soft sync issues. I really don’t want another 3340. I’ve owned a vintage pro one - just want something different even though I love 3340. I’d like to try a 259 replica but the one I found was a DIY that only included the board - I love DIY just don’t want to order parts. Also DIY for vcos requires an oscilloscope anyway which I don’t have currently. Can anyone suggest good buchla 259 replicas? I’d be willing to get oscilloscope if need be just don’t want to order chips and components. Thanks!