The left bank of cylinders are a solid 20 degrees cooler than the right simply due to the way UL Power designed their baffle kit. The design is not an issue for tractor setups but with pushers, it's different. Knowing my CHT's really need to warm up a bit, I decided to close off the left plenum to equal the same intake area as the right side. The most efficient way would be to slowly choke down the round inlet area, but adding a simple flat plate will be much quicker so I opted for ez :) I just need to trim this dam down to size and soon we should easily be within 2 degrees from cylinder to cylinder. I should have this all completed by the end of February and hopefully enough time on the mineral oil to switch over to synthetic and just fly this damn thing... no pun.