Lowering problems?

I recently rebuilt the front end on my '70 318 Duster and the first thing I did when I got the alignment done was I lowered the front end maybe an inch or so by having the torsion bars cranked down. It sat nicely, although now my bump stops were very close to hitting the chassis. I cut off about a 1/4-inch from the tops to make some more room and they seem to hit a lot less, although I can't be sure with these stock low-rate 318 bars. Is this a big deal, or should I not worry about it? Could I cut the bump stops even more to make more room?

edit: Thought I might mention it's a factory disc brake car (4-piston K-H).