Damn! Forgot to put washers on head bolts! Need some advice.

[Konstantin Bogach]

I was looking today at the head illustration in ETKA (installed on my PC
at work) when it srtuck me that I forgot to put damn washers on head
bolt when replaced a head couple weeks ago.  I was installing the head
with EM,IM and turbo by myself only, no assistant. You can imagine how I
was preoccupied!  I was so happy that I alligned the head that I just
dropped bolts from the box ritght into the holes.... forgot washers in
other words. Car was not driven yet.  Here are question arisen:

- can I remove and put back head bolts one by one? Or I need to slacken
them all according to the procedure, place washers and torque back
according to the same procedure?

- can I reuse bolts if the engine never got warm yet and they are
torqued 2 weeks ago?  I know that they stretch but I am not sure that it
happen at the moment they are torqued.

Thanks you.

Konstantin Bogach.