75C Display Contrast Adjustment?

[cruff]

(10-07-2014 10:55 PM)Dave Frederickson Wrote:  I would be very careful disassembling your 75C. Many 75's suffer from broken posts, like the common 41 problem.

Mine has two or three broken posts, I'll know more when I open it. I have experience replacing the lower posts in my 41CL with metal threaded standoffs.
Has anyone tried using something like Plast-aid to do this?