1/55 chunky monkey restoration question

[rusted180]

Hey fellas! Long time member.. haven't posted in ages!!

Anywho! It's good to be back. Just started getting back into macross. To celebrate, i just picked up 2 loose 1/55 valks. However, due to age, the joints are hella tight.. almost feel like theyre gonna snap when turned. Esp the forearm swivel. 

Also the screws are rusted. 

Anyone happen to know what screw sizes fit as a replacement? How about spring replacements in the legs? Let's say at some hardware store. Also, any tips on how to loosen up the movement of the non-spring joints.. would WD40 work to loosen it?

Thanks for help in the past and now! Im just happy im back in!

-Andrew

[Sanity is Optional]

The screws are almost assuredly metric, probably M3 or M4 (3mm or 4mm outer diameter).

[rusted180]

Hey thanks for the reply! I haven't broke opened my valk yet.. but hopefully jave something in my tamiya rc car spare screws bin..

Anyone has any idea about gettingreplacement springs for the hinges? Or any comparable ones out there that will fit?

Any chunky experts here?

Thanks again guys!

[Sanity is Optional]

For springs, I have ordered replacements for my PG Wing Zero, but I don't have any chunkies.

Got them off of McMaster after taking measurements, and ordered a couple different spring strengths to try.

[rusted180]

Hey thanks for the lead! Ill look into it..

[Bishop]

I am restoring a Jetfire and the folllowing video helped a lot to figure out what is going where. Been looking for a while for something like that.