了 with two verbs: What's the difference between 我去厨房找了饮料喝 and 我去了厨房找饮料喝? In one of my stories I wrote:


  我去了厨房找饮料喝。


A student at Nankai changed this to:


  我去厨房找了饮料喝。


Question: What's the difference between 我去厨房找了饮料喝 and 我去了厨房找饮料喝?

I just want to say something like "I go to the kitchen and get a drink."

As usual, I'm perplexed as to what's going on with 了.  I understand they are both the completion 了, so I'd guess that 去了 would imply I've completed going to the kitchen, while 找了 implies my search for a drink is complete.  I'm uncertain, so hopefully I can get a clearer mental picture here.
The difference is what is "completed and what not" 

(A)  我去厨房找了饮料喝 ==  I went to the kitchen and found a drink.

(B)  我去了厨房找饮料喝  ==  I had gone to the kitchen to find / look for a drink.

So,  "...找了饮料喝"  ==   "...found a drink"   (Completed)

  "...找饮料喝"    ==   "...to find / look for a drink"   (not completed)