I have a Hartke 410XL. One of the speakers just developed a tear about a quarter of the way around, along one of the folds on the aluminum part. I called hartke for a replacement driver and they won't be available until mid August. I have a gig tomorrow night and a local radio station sponsored gig in three week, lots of coverage and air play. On too of that, we have gigs just about every weekend through September. First question. After some desperate research, I decided to try to temporarily fix it with goop. I used a liberal amount on both sides and it seems to be holding. How long will this hold? Is there a semi permanent fix? Second question. What's a good replacement speaker for this cab? Doesn't have to be aluminum. Thanks!