.15 RC10GT Heat Sink Shim?

[Keilamym]

Hy guys.

My old RC10GT sat for a long time and locked up due to old gas and crap... (Thanks everyone for telling me)

I removed the heat sink and soaked it in gas and now it's moving freely.. I did notice that it didn't have a shim between the block and heat sink. Does anyone know the size of the shim and where I can purchase one?.

Thanks for your help.
The original part number is 29012...

 

[fstnd]

It's just to lower compression

 

[Keilamym]

I'm used to seeing a head gasket between the head and case so I didnt know. Thank You.