Hello all. I've just started building knives and I'm now working on my second knife. The blade came out of the quench a little warped. I've heat treated it 3 times at 400 degrees with the blade C clamped onto a 3/4 inch steel plate with a shim. Most of the warp came out but there is still a slight warp towards the tip. Is there any other methods which could straighten out the blade? The blade itself is 1084, 5/32 x 1 1/2 x 7. Thanks for reading.