i can't even operate our shades correctly. I can get them down, but never up. I'll pull and tug for like 10 minutes, and I'll try all different ways, speeds, angles, etc. and nothing. Wife will come over and WHOOSH they're up with her first try.
one time, however, I did fix the broken chain in the toilet upper thing. I didn't do it correctly as you have to hold the lever down way too long to achieve proper flush, but it's something.