o.k. fellow racers, have you ever had a math question that actually had two answers. well the droop delima actually has two answers because ther are at least two ways that racers check/change droop. first if your running rubber or foam tires then check your droop using the blocks under the chassis then measure the distance between the hub and setup board or table. presto you have your droop setting and it will not change unless the scwews dig into the chassis or a severe wreck that might have tweaked something. The second option is when you run foams and you check the droop by setting the chassis on the droop blocks and measure your droop by barely leting the tires touch the surface of the settup board, then with tire wear the droop setting must be changed or at least checked between rounds. but beware your tires must be exactly the same diameter or you will develope a tweek either on throttle or on brake depending on which end the problem is on.
As for the remarks about B.M.I. products I have only one testimonial. I have been racing my factory xray for about a month, which is an awesome piece straight out of the box, then I put my brand new B.M.I. chasis and top plate on, and in the first week out with it took three tenths of a second off of my best pre vious lap times. I guess when you have a company that soley consentrates on one or two aspects or a car that has hundreds you will eventually end up with a superior product.