PT
I too found the top side fans of little to no help.
During my ARPrvSafe installation I added a 12 volt blower motor NOT the typical computer fan at the bottom powered from a 8Vdc three terminal regulator which reduces the speed and thus the noise.
All I can say is WOW what huge difference the blower has made, propane usage reduction and lower internal temps. Last year picked up one of those USB temp/humidity data loggers and did some extensive testing. The results sure opened my eyes.
Read what ARP suggests regarding fans and location of the blower motors