Guitar players....intonation adjustment

[Lithium381]

My G string contantly goes out of tune(flat), i've accreditited it to my poorly intonated bridge(for that string) i checked, and sure enough it was out....i adjusted it, now it pulls my string sharp all the time.....wtf can i do, short of bringing it to a "pro"?
this is her

 

[Howard]

Do the reverse of what you did, except to a lesser degree?

Nice guitar, by the way.