CJ falls into the machine (Grand Theft Auto: San Andreas)

Hello!
I wanted to play San Andreas recently. Stuffed it quite sensible mod and all was well.
But here's the thing, when I climbed on the machine, CJ was a little fail in them, rolled a bit, but never mind, that's not very important.
But it came to robbing the casino and you have to drive COP stories on the left, the one with the jump on the roof. So here is the springboard, as it were transparent, it is impossible for him neither to call, nor to get up.
Help, please. Maybe there's some mod or setting or plugin that solves this problem?