I understand the difficulties in a project like that. It is still fun though, and I have a collection of $5 KEH "as is" camera gear that I have either repaired or butchered, so I'm coming from a supportive position here... I would love to see project pics if you get a chance to post them, and if you don't already have it, I can provide you with a 30 day download link to a super high quality three part PDF scan of the entire RZ67 repair guide, tools, and parts manual that is currently available on the net (free). You can even share it as you please.... Just send me an email address. That offer is open to anyone else on the forum who would like the manual as well.