trailer level when dumping black tank?

[Idaho Spud]

I have been camping with a travel trailer for many years. Every trailer i have owned required that when dumping the black tank the right side or Passenger side be higher than the drivers side of left side. Last year i purchased a Jayco 23fb.
This trailer seems to be very sensitive as far as level when dumping. If you have the right side high it leaves quite a bit in the tank.. It appears the drain for the tank is front and center. My experience so far seems to be that the trailer needs to be level side to side. This usually means adding blocks at the dump station as most seem to want to slope to the left. It would also appear as though the trailer would like to be low in front to completely drain. I am curious if other Jayco owners have noticed this. Thanks for listening.

[tnchuck100]

If you look under the trailer you will find the drain port is in the center-front of the tank. Along with the shape of the tank making that the low point when the trailer is level.

When I dump I frequently use my Lynx blocks to get level before I dump.

[dmax_83]

I also have to level before I dump, my outlet is in the rear of the tank dead center.

[jdorant]

i go level side to side and lower the front of my TT

[Boss Wagon]

Originally Posted by tnchuck100

If you look under the trailer you will find the drain port is in the center-front of the tank. Along with the shape of the tank making that the low point when the trailer is level.

When I dump I frequently use my Lynx blocks to get level before I dump.

I use one of my Lynx Level blocks also for this chore.

[Idaho Spud]

Thank you all for your responses. I thought i had it figured out correctly. My trailer is a G2 with the underbelly, so i cannot see the tank. Now i know for sure.

[rwilley]

The last 5er we had the drain on both tanks were on the left side so it worked well when pulling in to a dump station sense most of them tilt to the left. But the new one has the tank drains coming out of the tank on the right center so it needs to be fairly level to completely empty them.

[Jayflight Fun]

On my 28 BHS Jay Flight I dump the black water tank first. Then close that valve. I then open the Gray water tank 2nd to rinse and since it is in front of the dump spout while that is draining I go up front and jack the trailer & truck up to get the rest of the gray water out. It helps a lot but just remember to lower the jack before you take off. :/
As far as side to side I have not really had any issues. Just front to back is my thing.