DO NOT USE THE LOADER untill you get ALL 3 BRACKETS in place!!!!!!
the front hanger bracket, the trans hip bracket, and the lower strap bracket with attaches the bas of the laoder tot he onttom of the trans!!!!!
I typically don't have a problem using a selectrol valve for my 951.. but then my hyds touch control and cam pin are service and in good working ourer. if your linkage is sloppy under the cover and cam pin wore out.. yeah.. it may be touchy.
your options are to get that 100$ power beyond plate and about a 150$ open center single acting valve, and plumb that in.. OR pick up a used remote for the top cover.. they typically go for 150-200$.. i've bought many at that price.
soundguy