For anyone else that ends up on this thread, it took me a lot of time and pain to figure out that the top plate on the APE tensioner is thinner than the stock one (at least on 2013 and above). So you have to cut the oem bolts by 1-2mm so they dont bottom out. Kept getting some oil seeping out from there once it got hot. Tried all new gaskets and everything till I read this somewhere.