^
had axle slippage on a pair of indys once. actually just one of the trucks. i rode indys for almost ten years before switching to ventures out of pure boredom, indys are still fine to me. this used to be a constant problem for me though when skating thunders, along with their kingpin breaking fairly often and being rather hard to replace on the spot. made me quit riding them.
i've been on ventures since the 5.6 released, so far i couldn't notice any axle slippage.