Not to sound like a d**k, but didn't you realize your pay would be less if you were called for duty? Sure, being a reserve can be a great part time job, but it does come with risks. I'm not sorry you will be making less money while serving you country once activiated, but just think of all the other hundred of thousands of active duty members, you are NOW making what they live on each month. Your "part time" job of being a military reservist is kinda like investing in Enron stocks!!!!!!! Sometimes you can make out big, and other times it bites you in the a**. I recommend you not re-enlist when your enlistment is up, if you are not willing to take the good with the bad.
Oh, by the way, I am active duty, and a lot of reservists get pay/benefits from their employers when activated, but some don't. So, no more whining.
If your military pay is not enough, advance. Get promoted. Due something dumb like become an Officer. As an E-7, the pay isn't too bad, after putting in my 20 years, I'll get a paycheck for Uncle Sam, and the lots of time left in my life to have a second career.