Yeap, I made the same mistake when making my 4 player cab. Now I am working on redesigning it. Basically to allow more room, I had the 1st and 2nd player on the side angle instead of straight. p3 and p4 were in the middle straight. Like Kajoq, when people are trying to play anything, they run into major problem until they figure they have to sand at an angle.
The redesign will have the 1st and 2nd player in the middle and STRAIGHT.
If possible, don't angle them.