That exhaust port looks about the same as one on my MT35 that I had to return. My first MT35 seized just by turning it over by hand so I returned it and my second MT35 had many problems. ie. missing a bolt that holds the cylinder to the case, bad looking casting of the cylinder, loose fitting prop drive, locking choke that does not work for RC, ect. I ended up returning the second engine as well, so between two engines I did not even manage to get a prop mounted. I did get my money back but I was still out $40 in shipping. I would recomend staying away from MT until the QC improves dramaticly.