Just finished my third build (after a MG Proto Zero Wing Gundam I didn't post).
I got a great deal on 4 old master grade sets. The jewel of the collection in my eyes was the MG Zeong. Unfortunately it turned out to be a barely mitigated disaster. I don't know if its a product of the quality of the product at the time combined with age, or how the previous owner had it stored (maybe exposed to heat and cool in a garage?). But the kit has one large ABS runner, and two small ABS runners. Huge parts, fairly critical to the build.
But for whatever reason, the ABS is currently so brittle it will shatter for looking at it. So I ended up with two broken fingers, one broken hand, a few miscellaneous small parts, the left shoulder joint in the arm, and both shoulder joints inside the torso shattered in so many places I'm surprised they don't just completely fall out.
But, mitigated because it looks alright if I pose it once and don't move it again. The shoulder armor basically flops around if you don't have it pinching the chest armor.
Next up is a similarly aged Rick Dom. Very fortunately there is only Polystyrene and polycaps in this one, so it should go together just fine.