okay, so i've been using SOB Trainer for a long time, and i am having trouble with the whole zero clearance thingy...how do i fix it so that part of objects and stuff don't keep disappearing after i merge tracks together....!!!!

hi i like rct2...i play it all the time, i try to be original in my play.currently i am doing my first project...it's going okay so far. i hope to be done by the end of the month if i add something everyday. it's on a 150x150 or 170x170 map i cant remember.