Change TM drive ---deleteing TM files

I've got TM up and running smoothly, with several backups on my external drive.
1) Can I now copy my TM data to another (larger) drive (via a simple drag and drop in Finder), then change my destination drive in TM and have it continue to update that same data?
2) Say TM ran when I had a bunch of large temporary files on my computer, then, knowing I no longer need them, deleted them. Can I delete them from the TM backup on the external drive to free up space?

1) Can I now copy my TM data to another (larger) drive (via a simple drag and drop in Finder), then
change my destination drive in TM and have it continue to update that same data?
I would not advise using the Finder's drag and drop copy for this. I would recommend you use SuperDuper! (SD!) or Carbon Copy Cloner (CCC).
The SD! is not yet compatible with Leopard GM build 9A581 whereas CCC is. I tested CCC for doing this type copy and it worked without any problems and TM recognised it as a bone fide TM backup volume.
2) Say TM ran when I had a bunch of large temporary files on my computer, then, knowing I no
longer need them, deleted them. Can I delete them from the TM backup on the external drive
to free up space?
Yes you can. When in the TM browser simply highlight the temp files then click on the Finder's Action icon (has cog wheel in it) and select the "Delete all Backups of "temp-filename". See URL http://www.tech-recipes.com/rx/2655/leopardtime_machine_delete_files_folders_frombackup

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