I take a $5 heat sink from Mundorf on it whic cools it ,, the heat is from the regulators , the heat sink will add to its longevity you but a tube of artic silver
paste they use to put on computer processors to fans for under $20 cheap insurance , I take a zip tie to secure the heat sink , parts connecxion
look for Mundorf ultra resistors , and then heat sinks buy 2 put paste on surface
everything sits in the heat sinks