I have my VB-2 assembled and really like the wiggly vibrato to be had. One minor problem is that the single 9-pin BA-662A chip barely stays inserted into the socket. I bottom out the chip so that is not the problem. It looks like the pins are very thin and don't fully connect snugly with the socket. It has a very loose fit and any bump will cause the chip to just fall out of the socket. Anyone have any ideas on how to get the chip seated a little more firmly. Tape, glue, silicon or other? My finger works fine for now!
Another socker can be obtained quite cheaply from Radio Shack. I needed one for a mod I did and I was able to get a package of two of them for less than $1.