Tiller willnot shift gears,Theres not 10 hrs on this tiller been kept in the dry , worked fine two months ago ,now it will not shift gears ,stuck in forward gear transport only, Is there some way to get it unstuck without taking it apart ,What kind of seals will I have to replace if I take this thing apart. This is the sorryest setup Ive seen. You have to take everything off the frame because the gearbox is part of the frame.