Yeah, I did a strip build, and made my own enclosure, and that was the exact problem i had with it. Here is a pic. the 2 fans were enought to cool the inside, but the underside, no air flow to the top. I tore all the wires, and strips out, and putting in 4 cobs ( luminus-cxm-22s), and adding 2 more holes for fans to suck the hot air up and thru the enclosure. Im using a perfect Sun mini right now to veg out my FireOG, and not flipping till i get this cob build done,. Poor plant is on day 88 of veg, lol, starting to preflower, YICKs. Going to top one more time tonight, then 2 weeks about to recover before hitting her with the cobs. She has around 50+ good cola branches to flower off right now, but she is a tiny shrub, just many branches. Going to look like a giant tumble weed if she dont stretch.