406er
10+ year member
box builder extraordinair
man i had a tiny slit, and although the perofrmance didnt suffer, i could here it(in a suv) and theres a potential for it to get worst.it wont even hurt anything, its like 1/4" long slit. id leave it
what sucks is that u did a nice job on the box, and the sub was barly used. ive been in that boat and it sucks. the shop i got my MTX from just gave me another, u might no be so lucky
the beauty of the W7 however, is that u can unclip the suround to fix it from the back side. good luck with the repair. tell your bud if this dosnt fix it, he owes u a sub, and if it does, he owes u a case of beer