Yeah, that part looks like if you breathe on it hard enough it would break. I know of a part similar to the one you used but looks better built on harber freight. http://www.harborfreight.com/3-4-quarter-inch-forged-ball-point-joint-separator-99849.html

It's only $20 plus you can use online coupons to get it even cheaper.

Personally I used a large pitman arm remover to remove my upper control arms and sway bar endlinks, but never tried on lowers. It was like $15 at autozone.

If you insist on having the Miller part, I found it for $128 here. http://www.toolsource.com/tie-rod-end-remover-p-103519.html?sourceid=googleps

I know its just shy of 140, but figured more money for you for beer. :cheers