I drained and flushed the transmission on the tractor. The best I can tell from past forums it should hold about 4 1/2 gallons of 80-90. I removed the check bolt on the right side by the draw bar and started filling next to the gearshift. I have not measured what I have left, but I would say I only put in 3 or so gallons before it started running out the check area. When I drained it I did get just a little less than 5 gallons.  Any suggestions?

Also, what should the torque be on the brake seal that seats against the rear end housing with the six bolts?