Thanks Dave, that what i may have to do if i want to run the Contra. I know Brenner mentioned that he was a 1/4 inch under when he was measured at the NATS. Can someone with a contra drive measure the length of your airplane from rudder to the tip of the Contra and tell me what number you get. Dave i know that you had to cut the front of the dynamic to make yours work so your measurements wouldn't count . If the contra fits the Integral without a problem, i beleive the Spark and the Integral share the same length in fuse and rudder, at least it was the last time i measure it.

regards