RTG, yes there are tools designed for doing just this, but they cost about $200 or more...

What most do is to take a nylon/rubber/brass tipped hammer (something where it wont do damage, but will gently get the job done) and lightly tap the inner lip up starting at the top of the arch and working out to the sides (or down the wheel well) to gently and slowly bend the inner edge of the lip up and out of the way to clear the tire as needed.

But first you'll want to determine IF, this will give you the clearance (say 1/4 inch) But it sounds like you have it all taken care of!

Glad that worked out for you! I may have to do the same soon until I can get new springs for a winters project...

Glad to help when and if I can!

Brett - 67 Drop Top 455!