Steering column from an 80's van

I am using an 80s van floor column to convert my existing 74 dart column shift. I am using my original power column and just the 3 piece column sleeve from the van. It works the internals are the same. I do need a spring for the three piece collet on the column. The first piece on a column shift is held by a pin, on the floor shift it is held to the shaft by a spring that fits around the shaft. Mine is junk, I need one. Also my column lock works but I believe there is a sping to hold pressure on the locking mechanism. Again mine is junk.

My column works fine I just need a couple of springs. An exploded view of the column would help. Anyone know how to find one.