Over the winter I bought a 123 ,not running but including a tiller. The tiller was not mounted on it. I tore the tractor down to the frame , even cutting the spot welds on the "tunnel"(and replacing them with self tapping screws) for complete access . While it was apart , I lubed all of the lift linkage, and it worked easily. Now , I've mounted the tiller , and it will just barely lift it an inch. It's as if it was hooked to something immovable .I've tried several tension settings on the helper spring , none makes it better . I have the lower arms bolted (loosely) in the lower holes in the mounting bracket , there is another set of holes an inch higher , but I don't see that changing anything . Any ideas out there ? I'm afraid I'll break or bend the lever ....