hi all. I currently play through an avatar b212 cab and I came across an opportunity to buy a 410hlf classic from craigslist. Is it worth getting? I use a mark bass lmII sansamp bassdriver and ibanez sr505 and I read that the 410hlf is good for 5 stringers but I do love that mid range punch tone which I seem to have trouble getting with my current setup. When I dial in the tone I like, it activates the safety shut off in my lmII after about 15minutes of playing. I shouldn't have this problem with the ampeg right? And if I do end up getting it based on your opinions could I drill in casters to the bottom without damaging anything?