Today I was at the step where the aileron counterweight must be match drilled with the supporting nose ribs, and nose skin. I found it to be very difficult and ended up smoking 4 brand new, aviation quality drill bits before pulling everything apart and drilling on my mill instead. You could easily see the transition from cutting, then within maybe 2-3 seconds, dulling and melting so I'm guessing the 304 stainless gets hard quick when it gets hot. My drill bits literally had a round blob of metal at the tip where they melted. How did the rest of you deal with this step? I spent about 6 hours today just drilling the counterweight on one aileron. Any tips for a more effective way to drill this material? I also tried boelube and cutting oil.