I bought a 2013 mac pro and i was wondering if i should break it down to put new thermal paste on the GPU and CPU. I bought off Ebay and all i know about it that it works and the guy upgraded the SSD to a 1TB. He blew dust out of the fan and heat sink. I never had one before so i don't know if they run hot or what. What i read online tells me to put new thermal paste on it but some site say not to because they are not fun to take apart and it is easy to break cables or other parts. Thanks for the help or input.