I just replaced my F23A7 engine & transmission assembly from 1998 Odyssey with JDM F23A engine and transmission assembly, I had issues with the engine but not the transmission but I decided to replace both. now the JDM trany is shifting harsh and engine revs higher than normal before shifting to the next gear. do you guys think that the F23A transmission internals (gear ratio?) is different than F23A7 transmission? any one ha similar issue before?