I know hot swapping on the Xbox 360 Slim still works since my friend just hot swapped GTA 4 a couple weeks ago. Anyway, I'm having trouble hot swapping World at War. I'm using Verbatim DVD+R DL discs 8.5 GB. I'm using IMGburn with the write speed at 2.4 with the correct things checked off under settings. I'll list the different things I've tried to make helping easier d:

*I've tried using different write speeds such as 8x and 2x
*I've used both Verbatim and memorex with the different write speeds I've listed
*I've downloaded several different ISO's from different file-hosting sites
*I've tried hot swapping before I clicked install, while it said 0% complete, and while it said 1% complete

No matter what, the file always ends at around 90% and up. I've had it end at 99% before. It always gives the same message saying the disc failed to install because the disc was dirty and it gives me a couple options saying to either clean the disc or restart the console. Neither the original WaW disc or the modded ISO disc had any scratches on them. I have ran out of ideas and I'm almost out of discs to burn. I've tried tips from Se7enSins and even some random sites I Google'd, but nothing seems to work. Any help whatsoever will be appreciated!!!