Not sure what issues you are referring too we have not had any issues with our HF2A adapter kits or shafts. You must be confusing my company with someone else. These are the products we sell: HF2A Land Cruiser Transfercase to NV4500 Transmission Adapter Kit - Adventure Vehicles NW -...
We just finished a batch of the the HF2A to NV4500 adapters and resplined shafts.
https://adventurevehiclesnw.com/shop/land-cruiser/80-series/drivetrain-80-series/hf2a-land-cruiser-transfercase-to-nv4500-transmission-adapter-kit/
For the record for last 6 years Jonesy's and now AdventurevehiclesNW has no affiliation with Diesel Adapters, Duiser or Dustin Allmaras. 6 years ago Jonesy's started and grew DUISER into a business with a ton of potential as well as innovative and inspiring products for the Cummins swap land...