I can assure everyone I'm not here to cause any problems and why I rarely post anything. I am just sharing what I have seen but I do run very long trains on grades. What I have said is correct in how a PS3 performers vs a PS2 in those conditions.
My Big Boy sample size is also one of one, so maybe I got the one made on a Friday before a holiday. I'm a big MTH fan/supporter and have had great success with their products for decades.