I just finished swapping in a 60/14FF (4.56 gears) into my '82 K5 with a th350 trans. The trans shifted fine before the swap but now it just holds 2nd gear. I have checked my vaccum line and kickdown cable and they appear to be fine. The fluid level was a little less than a pint low but I havn't been able to drive since I topped it off to see if it helped. I just can't imagine that being a pint low would cause it not to shift into 3rd gear. I have searched here for a while and I can't think of anything else to check but I'm sure that I'm missing something. The trans was rebuilt about a 18 months ago and probably has 10k miles on it. Any suggestions would be greatly appreciated.