The threaded rod setup is different, but I think it still uses the same rods. Don’t go with the Taz 3 bed mounts, Print the Taz 5 ones, they don’t have the lifting issue and will fit fine. The Taz 5 X carriage is also going to be a drop in replacement with some additional nice features. The X end springs went through a bunch of revisions.Ideally you want to order a set of the X end plates from Either ITW if they get them back in stock, Or Techsavvy34 here in the forums, then pick up a pair of the leadscrews and leadscrew nuts (do a search for Mitsumi in the forums for the exact part numbers) and go straight to Taz 4 or 5 spec. The jump from 3 to for is a huge quality upgrade, and requires reprinting the same amount of parts. Assuming you have to buy them all new, thats around $120 + plastic for a much better printing printer
Edit: also, check your power supply. The Taz 1 was the 12 volt version, the Taz 2 should be 24 volt already.