Already did the compression check, not bad all cylinders are between 110 and 120. I thionk this is sticky valves or valve related in some way, seals, springs or adjustment.
This run was not a full press. I am sure if I pushed it I could have gotten more out of it with the over sized tires.
I am trying to work many years of sitting in a field out of it and have gradually taken it to this level ove the last several monhths.
There are many on this site who have taken these trucks even further than this.
