Tracking issue with dynavector 20XL

I recently purchased a Dynavector 20XL for my VPI Scout. I have been setting it up for the last couple of hours and I THINK I have it right but when I put it through the Bias Setting 300hz (track 8) on the Hi-Fi News test LP it squeals like a pig!!!The only way I can stop this is by increasing the sylus force to 2.5+ grams which I know exceeds the manufacturers recommended weight of 1.8- 2.2grams. I love the sound I am getting from the cartridge and everything I read here and on Vinyl asylum about this cart being a great match for the Scout appears to be true. I am noticing subtle differences on my copy of THE WELL that are very positive. How much weight(pardon the pun) should I put on cartridge not passing the track 8 test? I previously used a Grado Gold, Goldring Eroica ,and Denon DL103. All three passed the 8 track test with no problem.