My new project is using the Harbor Freight Predator 670. Starting to get running like i want with carbs and all instruments working. using Dual carbs on back of cylinder heads to eliminate carb icing. They are PWK28’s but having trouble getting floats set to where fuel not going over overflows. Getting some oil out the vent. Using Ace Aviation redrive with Warp Drive ground adjustable prop. At present setting getting 3600 rpm on engine. More work and fine tuning to come.