Zeiss Super Ikonta 536/16 grub screws

[Dan0001]

Having sucessfully adjusted the focus of two other Zeiss folders, the 521/16 and the 521/2 in which I removed the scale focus rings by unscrewing the 3 grub screws, I thought I would tackle the 536/16. I had more problems as the grub screws were much harder to remove and necessitated more force. I did remove the scale focus ring but while testing the focus I removed and put on the ring several times. The final time I secured the ring with 1 grub screw but 2 other screws were so mangled that I was unable to tighten them. So far the the ring is secure but I will never want to remove it again for any reason. Is there a trick that would have helped me like a very small dab of WD40? Any other thoughts?
I did learn the hard way that you never remove the grub screws completely or you will spend a 1/2 hour or more trying to screw them back in the hole.

 

[shutterfinger]

So far the the ring is secure but I will never want to remove it again for any reason. Is there a trick that would have helped me like a very small dab of WD40? Any other thoughts?

Water Displacant #40 is not a good product for cameras. https://wd40.com/cool-stuff/history
Screws in cameras are often set with a thread locker similar to clear nail polish. Nail polish remover works well to dissolve it.
http://www.cvs.com/shop/beauty/make...ail-polish-remover-prodid-893436?skuId=893436

 

[AgX]

Here nail-polish remover all contain additives. Often curing ones as wax.
I would not use them on photo gear. Rather a plain solvent instead. A good starting point would be acetone. Be aware acetone attacks some plastics and other varnishes. Apply it by a grade 0 or 00 brush.

 

[shutterfinger]

ere nail-polish remover all contain additives. Often curing ones as wax.

You are likely seeing the Protein Enriched or similar version.
http://www.cvs.com/shop/beauty/make...over-regular-8-oz-prodid-1015171?skuId=899198
One may have to hunt for the basic version. I use a saturated cotton swab to apply it. Such a small quantity is used and its easy enough to clean up/remove after drying that some additives may not be an issue.