Xaarzuu

Hi there, I'm starting a Montesa Cota 200 restauration. My Grandfather bought it at the Montesa factory back in the time (first hand). She stayed maybe 30 years without starting. Could you help me with find the documentation I need (I speak Spanish so it might be easier to find one). I already have the parts plans, but no technical documentation... I don't want to start it without checking the tank and his state (idk if you know what I mean, English isn't my first language). I'd like to check several parts before stating it. Also I have a part a black part on the top of the shocks absorber (back) cracked, where can I find parts if they're still available ? Thanks for your help ! Ride safe ✌🏻