Good to see a GLR on the track. I may need to get one of these as well as I just love the GLA.
Sound like you are having an issue with traction rolling. I have had no issues with my 90mm wide car traction rolling but the same chassis at 86mm running the Stratos body will TR if I ham ham fisted. I will also TR my 94mm chassis once the tires get a bit of heat in them.....again I can pretty much eliminate it if I am gentle at the end of the long straights......I have actually come around the turn at the end of the straight in two wheels a number of times and kept it shiny side up.
I did not get to run this weekend but I will get some laps in nest weekend.
I converted on 94mm car to LM spec so I will need some time to get it sorted. I was kind of bummed switching it over as my 94mm chassis felt so good.
Cheers,
Jim