To be perfectly honest, braided and stainless braided hose can develope kinks like you are seeing. Typically I recommend going back with a factory style flex tube. Cotton sells a factory replacement as does Nos4gn.
The problem you run into (as you can see in the pictures) using normal hose ends causes the hose to kink and using sharp bend swivel 45* fittings, can cause oil to back up inside the cartridge because the ID of the complete assembly necks down. Some have gotten lucky and not had issues, but I know of a few who have.
The factory flex tubing serves a couple of useful purposes.
- Allows some flex of the line under normal operating conditions.
- Allows the aerated and foamy oil coming out of the turbo to turn back to a liquid state before draining back into the lifter valley.
I have had very good luck using the factory style flex tube on all of my Turbo Buicks. Never had any good results with braided lines, due to how cramped an area we're working with and kinking issue.
Just my O2's worth.
Patrick