I decided it was time to put an OAK on the stove after reading about the benifits. Not a tough job except for cleaning out the storage area to get to where I needed to be. I did end up with 1 more elbow than I thought I would need. 7 foot of 3" pipe 4 elbows. Will that be to restrictive? The inlet on my PC45 is only about 2 1/2" the short test burn looked normal to me.