998 is not really underclocked.
And I was able to get 1445 one time (after trying a bunch of times) on stock kernals so it can happen. Also sometimes the test can glitch and not be very accurate, it can also work in your favor.
Ok my 3rd run with Quadrant (first two were in the 1300+) was 1420 at 998, so pretty good.
My Linpack scores all right at 40 (this was overclocked at 1.15)
Don't feel like trying 1.19 as I don't feel like taking my case off and pulling the battery when it doesn't work.