There were several forum posts stating a standard ball inflation needle would work fine to deflate the IFP chamber. And, with the help of a friend, it could be held in place while re-inflating the IFP chamber.
I decided to go a step further and find a way to thread the ball inflation needle into the IFP port. After some garage testing, I figured out the port was a standard 8-32 thread. I bought some supplies and started trying to build my own version of the tool. Here's the result...
NOTE: This tool will only work with the TALAS I (first generation). It will not work with the TALAS II. I have an idea on how to build a TALAS II IFP tool, but I don't have a TALAS II to test it against. The TALAS III does not need an IFP tool for servicing the air spring.
Full parts list available here: http://huckingkitty.com/forums/viewtopic.php?f=11&t=588