We ran a class for GT’s in a recent past, which, eventually, turned out to be a failure. But, nevertheless, one of the chaps there found the Aston Martin, with it’s long wheelbase, had too much “drift” in it, breaking out too much. Seeing that the Slot.it HRS chassis was permitted, he then took the loose guide from the HRS2 chassis and used that on the HRS and modified the existing guide to only take the front axle and wheels. The result was that the guide ended up behind the front axle and the car behaved better and handled as predicted.