I need help designing a transformer but having a massive problem (images as reference and third image is the height for the design)

So for the transformation I need the thigh to kinda sink into the lower leg but if I do figure out a method it can't click in so it's unstable or just can't handle the weight which also leads to a unstable build and I don't care for a high piece count I just need something that works submitted by /u/theSmartAss2000 [link] [comments]