Re: bending aluminum frames
I simply use an old axle to hold the dropouts in the proper position and use a small car jack to spread the frame where needed for clearance. Add a couple boards to spread the loads and avoid kinking the frame tubing.
The small amount you need should be no problem at all.
But remember aluminum does not bend like steel and will work harden and crack if bent too much.
Only do it once.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.