PROBLEM SOLVED-mostly....
I spoke to MIE's Bob Piro, and we discussed the issues I'm having, to which he said that the parts are available to rebuild the tool rack as needed. He cautioned that if the rack pads are bent or racked or twisted from contacting the bucket squarely, then the rack might not be able to lock in place as it would from the factory.
He clarified that an upgrade from single handle tool rack to two handle later models are NOT available to fit my KL-401 loader. He further stated that the single handle fitment to the handle link, (pivot piece) does allow for removal/replacement from the tool carrier frame bracket. The handle link is fit into the triangular bracket, (with hole), that comes welded to the frame bracket. For more clarity, refer to the parts breakdown on MIE's web site which shows exploded views of the tool rack and associated loader and tractor parts by model, etc.
Note that he said if the single handle's hole is worn out of shape, or the corresponding handle link,(pivot piece) has it's shape worn to where the handle has excessive play before it engages the lock/unlock function, it is best to replace both pieces.
I'm placing an order for the parts necessary to hopefully rebuild my tool carrier to as close to factory as possible. I've got to take some measurements on the tool rack to make sure none of the pads or other crucial parts are tweaked out of alignment, before I try to restore the tool rack.
I'm going to drop a pic of the tool rack assembly here for purposes of further clarity. And a big shout out to Bob at MIE for his assistance in fixing my confusion over what solutions were possible for the issues I am having with my tool rack.
The below pics are from MIE's site and their excellent efforts to make searching for Kioti tractor parts much easier for the DIY crowd. Thanks, MIE for your continued support of TBN and it's members and other Kioti owners!
Note you can click on the pics and drag/drop etc. The handle link (pivot piece) is part #9. Hower over any part # box for part # and price...