I have never (except for my first couple of tens years ago) Had any problem getting my tent back into its bag.
The trick is ensure everything is folded in, you get all the air out and that you have a slippy outside bit of the fly sheet on the outside this helps it go into its bag...
If you fold it the same everytime it will go in and you will keep your vcreases for guidence, but look out for folding wear...
My OH just gets angry with the tent and stuffs it in the boot until we get home and then I have to try to do it in the living room. This was even true for our old 2man tent which he insisted had come in a bigger bag that I had hidden. Now we have a bigger tent he is even worse, so i bought a bigger bag.
------------- Sue
Duct tape is like the force. It has a dark side and a light side and it holds the universe together
make your first fold down the middle and fold inwards so that the insides only are touching and the outside of the tent is errr.... outside - then this will keep the inside of the tent/flysheet clean.
Here's what I do to get my satellite 12 in it's bag, fold all inners and groundsheet for living area so they're squares about 18" wide. Fold fly sheet so that pods go into middle then fold middle together then into middle again (like folding a sheet) then get the pole bag with poles and pegs in and start to roll flysheet over the poles till you get to the other end. put the whole lot ontop of the compression straps, fasten, sit on tighten. Then put the unzipped bag over the top of the lot and roll it onto it's side and then right way up, works every time!
Not quite sure about the Antares 13 though, I e-mailed Wynnster to say how good the tent was but it would have been better in a wheeled bag rather than just a holdall type one, they have sent me a wheeled bag that they had lying around the warehouse but it's for a mercury 9, some of it should go in but not the whole lot as the bag it's in at the moment is twice the size!