My power sunroof opens but doesn't close... plain n simple ... whats wrong LOL...... someone said it could be the cable to pull it in but iono ... if anyone has knowledge or has had this problem fixed before let me know PLEASE

so, my dad's hard top for his 380 convertable mercedes dropped on my 93 legend ls and smashed the sun roof, but nothing was broken. so i took it to a cheap mexican body shop and they SUPPOSIBLY fixed it. but it just rained in michigan and my car leaked all ove the place. spilled cold water on my girlfriend. any ideas on howto fix the leak?