Ok, I looked at your profile and pulled up this pic on your 'My Space';
The Neck stand looks to be about 20mm or less give or take from this photo. 35mm - 38mm is more of what I see coming out of the better adjusted/made Basses today. This allows for more bridge height and with less pitch of the Neck which lessens the tension as well. This can help many Basses that sound choked from too much tension on the Top. Also, that Bridge looks on the low side (maybe 6" in the middle) and looks warped towards the Fingerboard.
I picked up an old Kay in trade recently and I am having the Neck moved out and then a New Bridge fitted with more height off the Top/body but lower to the Fingerboard than it was possible before. Many of these old American Ply's need the same for optimum set-up.