I think I was the only one on the track at the time and in hindsight I should have probably not floored it and went up over that hump..lol...You may need a chain breaker to add or subtract links .
The axle , I would agree should be even on both sides though I am not at all familiar with that chassis . That is essentially a big change . With out scales you may or may not be ok . Still I think of the cuff I would change it .
You definitely do not want to be dragging the seat , or running over rumble strips .
I almost bought a link breaker when I bought the new sprockets but I had just bought that beacon as well and to be honest I've been spending quite a bit for the three 8 lap sessions I've had and didn't want to spend more. I'm sure I could grind out one of the links for a medium setup if need be... I will buy one in the future but I like to limit my spending per month per say..
Yes I could see offsetting the axle a little bit if I was going only one way but on the sprint track I'm going both. Of course 5 times left and only two times right...