Sorry to hear of your plight, mbrogz3000.
Since you started this thread as a lesson learned I thought I would add another warning for a potential gotcha.
If you are 50 or older the contribution limit to a 401K type plan like our TSP is increased to $24,000 (2015 & 2016). Unfortuantely my agency treats the extra $6000 as a seperate contribution called the catch-up contributiuon that really complicates matters.
You can contribute whatever you want to the catch-up contribution and it will automatically stop when it reaches $6000.
The regular contribution is more problematic. You have to make sure that you contribute enough every pay period to receive your agency matching contributions. Agency matching is based on regular contributions, not catch-up, so you can't do this sequencially. You have to contribute to both throughout the year. You also need to make sure that you max out the $18,000 of regular contributions before the end of the year if you are contributing to the catch-up.
This is critical. If you don't max out the regular contribution my agency will return all of your catch-up contribution for the year and you'll be out of luck.
So, I hope you are good at math because you are going to have to compute how much to contribute each payday to meet both requirements. Oh, and don't forget to keep track of your paydays (not pay periods) for the year because sometimes we get 27 instead of 26 paydays a year. That's my case this year. They certainly don't make it easy on you. You'd think they don't want us to save for our retirement or something.