thanks terry, I will measure how long the ones I have off ebay are - I just took a rough guess yesterday. I guess i should check the balls are the correct ones too.

heres a pic of two of the springs, the top one is 1.3 inches long and the bottom is .98 inches long. the wire on the long spring is .046 and the wire on the short one is .064. the top one came from ebay and the bottom one was in the box when I bought it. the balls in the shifter are 7/16 so are correct.