I went with Trianon viking bags on my classic lt, didnt like itty bittie originals.
Drilled them myself to where I wanted 'The Fit'.
No mods needed,they fit on to mounting hardware of old, off in 2 mins when ya want.
That velcro problem with these bags is quickly solved with a few mins with a disposable razor, lid and bag. I used washers both sides of bag sides for protection. Hold tons and way cheaper than most similar.
For what its worth. Have fun.