Seychelles and traffic a/c

[salo2k4]

Hi! Can you tell me about traffic behavior. I've added some traffic airplaines (from SPAI) to your FSIA scenery and it starts to descent very close to airport, approaching much much above glideslope and then go around. Do you know how to fix it? And how to use runway 13 instead of 31 which is always active? And it is strange behavior of towing tracktor on stands 11 and 12, with traffic aircraft placing with north direction before flight tracktor starts to pushback to south to grass field behind stands 11 or 12. disconnects on grass and then a/c goes on own thrust