1952 Super 88 hydramatic adjustment

[Guest 4421972]

I have a 1952 Super 88 with the 4 speed hydramatic transmission.  If I put it in Drive it shifts 1-2 and 2-3, but never goes into 4th gear.  If while stopped I put the selector into Low, it shifts 1-2, then when I put it in Super it shifts 2-3 and when I put it in Drive it shifts into 4th. 

 

Is this likely a linkage adjustment issue?  I have read some about the adjustments.  The car shifts too quickly at too low a speed, and the 1-2 shift is soft or mushy.  So I think the TV rod needs shortening.  Could this be so far off it also is causing the car not to shift into 4th while left in Drive?

 

PS-if anyone knows where I can get a hood spring for this car I sure do need one.  I have one, but not two. 

[Guest 4421972]

For reference having spent time adjusting this, moving the TV rod 6 turns on the adjustment did get it to shift properly.  It shifts into all 4 gears now, and the shifts are more or less good shifts without slippage or mushiness.