My exhaust outlet on my Harman P43 is 9" on center from the hearth pad. My wall thimble has to be higher up on the wall by around maybe 8". It's a corner install and if looking at the stove from the front the thimble is to the left and 45 degrees from the stove outlet. I'm sure there is a mishmash of angles to get to the thimble but I'm wondering if it would be acceptable to use a short piece of flex, (If I can scout up a short piece somewhere) to go from the stove outlet to the wall thimble pipe. I would be using an appliance adapter and the piping is PVP pellet vent pro. I'm not sure what exactly I need to order to get everything lined up. btw I already have some leftover parts from another install in my old house. Have a clean out tee a 12" inch and a 6" pipe section. So I'm using the 12" to go through the wall thimble to the clean out tee. I will go up three feet to a 90 and then use the 6" and a termination cap. Also installing outside air. I am getting the stove delivered Oct. 11 so I don't have it in place which only complicates things more. Thanks in advance for any suggestions.