if anyone has the combo could you please let me know if you put the servos in the tail or in the tray.

I have a Da 50 in mine and have the rudder servo in the back and pull pull on the elevator with the battery behind the canopy. You can do it either way you want but you might have to put your battery in the back somewhere. Also make sure you put your fuel tank under the battery / receiver plate it helps allot. Also you might try a tuned canister muffler set up it moves the muffler weight back some. Dont forget to do some major firewall work to keep that engine on the glue isnt so great on that thing.