[BillZ]

I have a slow leak somewhere in the front of the hydrostatic transmission on my 129, but the more concerning problem is that the transmission will pull itself into full forward on its own while driving.

It doesn't matter going up or down hill, it just works its way up to full speed and takes off. The brake will take it back to netural, or you can hold the control lever down.

What should I be looking for? I'm not very experienced in fixing things like this, so I'm wondering if this is major project or something easily fixable.